A physical or biological factor that limits the migration ,interbreeding,or free movement of individuals or populations.

障碍物理或生物因素,可以限制迁移、杂交或个体及群体的自由运动

属类：综合句库--

It is possible that the ardor of foreign migration is more selective of hardy biological stock

这大概是外国移民的生命力具有较强的生物系世系的选择性之故。

属类：综合句库--

This reflected a migration of truly awesome proportions

这是一种真正骇人的人口迁移运动。

属类：综合句库--

The two-way flow will mark the free migration of population

这种人口的双向流动是“自由迁徙”的标志。

属类：综合句库--

The specificity of the hydrogen migration has been demonstrated through the use of deuterated compounds

这种特殊的氢原子迁移,已经用氘化化合物予以证实。

属类：综合句库--

This work has been undertaken according to the principles of migration by free will, resettlement in the nearest possible areas, acting within the limit of resources, and the provision of appropriate subsidies

中国的移民扶贫开发,按照群众自愿、就近安置、量力而行、适当补助四项原则进行。

属类：综合句库--

The major methods of aiding the poor by migration include: First, governments subsidize the poor households for migrating and resettling near their relatives or friends

中国实施移民扶贫开发的主要做法有:一是插户移民。即由贫困户自行投亲靠友,分散安置,政府给予一定补助。

属类：综合句库--

general migration equation of chromatographic relaxation theory

柱分离过程弛豫理论的一般输运方程

属类：化学及生命科学-化学-论文文摘

Some who made the earliest westward migration became known as the celts, whom Caesar's legions found in Britain

最早往西迁移的那些人就是凯撒的大军在不列颠发现的克尔特人。

属类：综合句库--

The goals to be reached are to register households in accordance with the place of residence but not the existing migration examination and approval system, and count agricultural and nonagricultural population in accordance with people's occupation

最终可能达到:依据居住地来登记户口,而不是现在的迁移审批制;依据职业来进行农业人口还是非农业人口的统计,但仅仅具有统计意义。

属类：综合句库--