Even after a field has been discovered, one out of every four holes drilled in developing the field is a dry hole because of the uncertainty of defining the limits of the producing formation.

甚至在发现了一块油田过后,在开发这块油田中,每钻四口井中就有一口井是无油井,因为对产油区域的界限无法确切。

属类：应用文体-读书笔记-

Enforce referential integrity , which preserves the defined relationships between tables when you add, update, or delete the rows in those tables by defining primary key and foreign key constraints in the related tables.

实施参照完整性，通过在相关表中定义主键和外键约束，参照完整性能在对表中的行进行添加、更新或删除时保持表之间已经定义的关系。

属类：IT行业-微软网站-软件使用

Using a connect string avoids defining a machine or file DSN and passes the connection information directly to the ODBC Driver Manager.

使用连接字符串可以避免定义计算机或文件 DSN，并可将连接信息直接传递给“ODBC 驱动程序管理器”。

属类：IT行业-微软网站-软件使用

The data dictionary, a collection of data describing and defining the data, is useful throughout the systems analysis and design process, and is often used to build a database during the implementation stage

数据字典是描述和定义数据的一个数据集合，不在各个系统的分析与设计过程中有用，而且在实现阶段经常被用来建立数据库。

属类：综合句库--

They both sign a lease(a written legal agreement defining the terms of the tenancy)

双方共同签订lease(合同)--规定tenancy(租赁)条款的法律性书面协议

属类：综合句库-典型例句-

Further defining government functions, tightening up cooperation between various departments, and increasing the consistency, coordination capacity and predictability of government policies

四、进一步明确政府职能，加强部门之间的合作，提高政府政策的一致性、协调性和可预见性。

属类：综合句库--

Some of these dilemmas could be solved by legally defining a clone as a human, according it all the same rights and protections

通过法律程序将克隆体裁定为人，赋予他以人类所有的权益与保障，这样就可能解决一部分难题。

属类：综合句库--

Defining a primary key for a table in a database diagram automatically creates a primary key index that is a specific type of unique index.

为数据库关系图中的表定义主键会自动创建主键索引，这是一种特殊类型的唯一索引。

属类：IT行业-微软网站-软件使用

a tablature is a system of notation that describes how a note is to be produced, where the fingers are to be placed, rather than defining an absolute pitch.

弦线乐谱这种乐谱标明每一个音符的演奏法，指法，而不确定任何绝对音高。

属类：行业术语-音乐-音乐知识

Molding:In architecture and the decorative arts, a defining , transitional, or terminal element that serves to contour or outline edges and surfaces.

线脚;装饰线条:建筑和装饰艺术中，用在周线或轮廓边缘与表面的，起勾画、过渡或尖端装饰作用的部件。

属类：行业术语-艺术-工艺

A membrane called the pleura lines the cavity (parietal pleura)and continues over the lung (visceral pleura)and the rest of the cavity’s contents, defining a space called the mediastinum.

胸腔内壁有一层胸膜(壁层胸膜)，一直连接到肺上，成为脏层胸膜;而胸腔其余的空间及其内涵构造则称为纵隔。

属类：化学及生命科学-医学-生理与解剖

Dictionaries are often unhelpful for language-learners because the defining vocabulary is unknown

一些字典由于释义中使用不为人知的词汇而往往对语言学习者没有多大帮助。

属类：综合句库--

A specification which determines how something is constructed,defining functional modularity as well as the protocols and interfaces which allow communication and cooperation among modules.

一种规格说明。它决定系统如何构成，确定功能模块以及允许模块间进行通信和协同的协议与接口。

属类：综合句库--

By defining the connotation and extension of brand extension,the article discusses the fundamental problems in the brand extension process, i.e., the relations between brand extension and brand asset, brand extension and brand type…

以品牌延伸内涵与外延的界定为切入点,详尽地探讨了在品牌延伸过程中必须解决的四个问题,即品牌延伸与品牌资产的关系、品牌延伸与品牌类型的关系…

属类：单位简介-公司简介-品牌服务公司

Since the system starts with the user, the first step is defining the user’s needs

因为系统是由用户提出的，所以首先要确定用户的需求。

属类：综合句库--

Charter:a document issued by a sovereign, legislature, or other authority, creating a public or private corporation, such as a city, college, or bank, and defining its privileges and purposes.

营业执照:由君主、立法机关或其他权威机构颁发的文件,为创立公共或私人公司,如自治市、大学或银行,并规定其特权和宗旨.

属类：综合句库-未分类-

Used esp in formal written English as the object of a v or prep in a non-defining clause

尤用于庄重的书面语中,作动词或介词的宾语以引导出非限定从句

属类：综合句库-典型例句-

Since insolubility is the defining characteristic, cholesterol and related steroids, carotenoids (see carotene), prostaglandins, and various other compounds are also classifiable as lipids.

由于不溶性是决定性的特点，所以把胆固醇以及与之相关的类固醇、类胡萝卜素(参阅carotene)、前列腺素以及各种各样其它的化合物也归类于类脂化合物。

属类：化学及生命科学-化学-

Contacting the auditee to obtain its full cooperation and initiating the process;2)Defining the objectives of the audit

与受审核方接触以取得后者的充分合作，而后启动审核;2)确定审核目的;

属类：行业术语-环境专业-环境管理体系审核

Language, tool-making, and the regulation of sex are the chief defining features of man in contradistinction to other primates

语言、工具的制作以及性的节制乃是人区别于其他灵长动物的主要的界限明确的特点。

属类：综合句库--

This is accomplished by defining a connection string in the ConnectionString property of the Open method of the Connection object to pass the connection information to the OLE DB provider.

在 Connection 对象的 Open 方法的 ConnectionString 属性中通过定义连接字符串，将连接信息传递给 OLE DB 提供程序即可达到这种目的。

属类：IT行业-微软网站-软件使用

"Before defining "" technology "", it is better to have a clear idea about the generic term "" technique "" which may or may not be related to science."

在定义"科技"之前，还得先把"technique"(技术)这个泛用词讲清楚，它可以和科学有关，也可以无关。

属类：社会文化-新闻报道-

In non-defining relative clauses whom or who(not that)is used and the pronoun cannot be omitted

在非限定性关系从句中,要用whom或(不可用that)而且不可省略

属类：综合句库-典型例句-

At this stage, we are not interested in writing code or in defining precise data structures

在该阶段上，对写代码或确定精确的数据结构并不感兴趣，

属类：综合句库--

Management should involve suppliers and partners in defining and implementing effective and efficient processes to protect purchased material.

在确定和实施有效和高效的过程以保护采购材料时，管理者应当吸收供方和合作者参加。

属类：应用文体-ISO文件-ISO认证

Defining a primary key for a table in a database diagram automatically creates a primary key index that is a specific type of unique index.

在数据库图表中，对表定义主键将自动创建主键索引，这是一种特殊类型的唯一索引。

属类：IT行业-微软网站-软件使用

For Gas and Power, the defining moment of the year was ALNG′s successful bid for a 25-year LNG supply contract to the Guangdong LNG terminal.

在天然气与电力业务方面，今年最令人瞩目的消息是澳大利亚液化天然气公司成功夺标，赢得为广东省液化天然气接收站供气25年的合同。

属类：单位简介-壳牌公司网站-壳牌新闻

Against this backdrop, Shell had a defining year in China.

在这样的大环境下，2002年成为对壳牌中国具有决定性意义的一年。

属类：单位简介-壳牌公司网站-壳牌新闻

These values are contained in four core policies, which are consistent throughout the world governing our business and defining those values.

这些价值观贯彻于全球统一的四项核心政策之中，也通过这些政策得以体现。

属类：单位简介-壳牌公司网站-公司简介

This tradition continues through a singular focus on creatively managing, converting, minimizing and distributing power--one of the most important defining characteristics of a semiconductor company in the early 21st century.

这一优良传统将继续发扬,我们将专注于以创造性的方式去管理、转化、节省及配送电源--这也是21世纪前期的半导体公司最重要的标志特征之一。

属类：单位简介-公司简介-