(of a fire or fireplace)give off too much smoke(and send it out into the room instead of up the chimney)

(指炉火或壁炉)出烟过多(未经烟囱排出而进入屋内)

属类：综合句库-典型例句-

(of plants)give off (watery vapour)from the surface of leaves,etc

(指植物)(从叶面等)散发(水汽).

属类：综合句库-典型例句-

Plutonium is a silvery metal that tarnishes in air; it is warm because of energy released in alpha decay. Its isotopes, all radioactive, are highly toxic radiological poisons because they give off alpha particles and are specifically absorbed by bone marrow.

钸为银白色金属,在空气中会失去光泽。因α衰变释放的能量使得钸是温暖的。它的所有同位素都是放射性的,因其放出的α粒子易于被骨髓吸收而具有高度的放射性毒性。尽管具有潜在的致命性,它的毒性通常是被夸大了的。

属类：化学及生命科学-化学-

In respiration, it is taken up by animals and some bacteria (and by plants in the dark), which give off carbon dioxide (CO2). In photosynthesis, green plants assimilate carbon dioxide in the presence of sunlight and give off oxygen.

动物和低级植物呼吸时,从大气吸入氧气,呼出二氧化碳。高级(即绿色)植物则在阳光下通过光合作用吸收二氧化碳并放出氧气。

属类：化学及生命科学-化学-

To give off soot or color.

发出煤烟色,脱色

属类：综合句库--

Covalent hydrides are mostly compounds of hydrogen and nonmetallic elements; they include water, ammonia, hydrogen sulfide (H2S), and methane. In polymeric hydrides, the hydrogen forms bridges between other atoms (e.g., hydrides of boron and aluminum). Those hydrides give off large amounts of energy when burned and may be useful as rocket fuels.

共价型氢化物,大部分是氢与非金属元素的化合物,包括水、氨、硫化氢(H2S)和甲烷。在聚合型氢化物中,氢构成其它原子之间的桥梁(例如硼和铝的氢化物),这类氢化物燃烧时会释放大量的能量,可用作火箭燃料。

属类：化学及生命科学-化学-

Many household products give off noxious fumes.

很多家用产品散发有害气体。

属类：英汉句库--

The heater can give off much warmth.

加热器能散发出热能。

属类：学习英语-成语例句-

The nitrate and chlorate, very volatile, give off brilliant crimson flames and are used in flares, fireworks, and tracer bullets. The radioactive isotope strontium-90 (see radioactivity), produced in nuclear explosions, is the principal health hazard in fallout; it can replace some of the calcium in foods, concentrate in bones and teeth, and cause radiation injury.

卤化锶、硝酸锶和氯酸锶极易挥发,并能使火焰呈亮猩红色,用于各种照明弹、烟花和曳光弹中。经核爆炸形成的带放射性的同位素锶-90,被认为是落尘中最危险的成分;它能取代食物中的一些钙,集中于骨骼和牙齿,而造成辐射伤害。

属类：化学及生命科学-化学-

You must give off gambling

你必须停止赌博。

属类：综合句库--

The screen is coated with chemicals that give off light when struck by the beam.

屏幕上涂有化学药品,在受[遭]到电子束撞击时即可发光。

属类：工程技术-科技英语-

Trees give off large quantities of water and serve as cooling agents.

树木释放出大量的水分,可以起到降温的作用。

属类：口语表达-各种话题句-环境保护

If plastic and rubber are burnt, they'll give off poisonous gases

塑料和橡胶燃烧,就会放出有毒的气体。

属类：综合句库--

Although planets give off no light of their own, they reflect the light from the sun and look like stars at night.

虽然行星自己不发光,但是它们反射太阳的光线,夜里看起来很象星星。

属类：工程技术-科技英语-

"Their stable electronic configurations, with no unpaired electrons to share, make them extremely unreactive-hence "noble" (i.e., aloof)or inert-though the three heaviest, with outer electrons held less firmly, can form compounds (mainly with fluorine). These gases absorb and give off electromagnetic radiation in a much less complex way than other substances, a property exploited in their use in fluorescent lighting devices and discharge lamps."

它们的电子构型十分稳定,没有可被分享的不配对电子,这使它们极端地不活泼,因此也就

属类：化学及生命科学-化学-

The fluorescent material which coats the screen of a CRT.When the electron beam strikes the phosphor its electrons become excited and move to a higher energy level.When the electrons return to their original level they give off thelight that forms the display on the screen.

涂在阴极射线管(CRT)屏幕上的荧光材料。当电子束打到它上面,激活它的电子到较高的能级上,等电子返回到它原来的能级时便发出光,使屏幕上显示出图像。

属类：综合句库--

Physicists are studying new ways of generating electricity with less damage to the environment. In the meantime, many power plants are being modernized to give off less polluting material.

物理学家们正在研究对环境危害少的发电新方法,与此同时,许多发电厂也在实现现代化以减少污染物质的释放量。

属类：综合句库--

Her fairy sleeves, fluttering, give off a heady fragrance of musk and orchid.

仙袂乍飘兮,闻麝兰之馥郁

属类：文学表达-中文名著-红楼梦

The stars are so fiery hot that they give off great light and heat- more than the hottest, brightest fire you can imagine.

星星像火一样的灼热,释放大量的光和热--比我们所能想象的最热、最亮的火所发出的能量还要大。

属类：学习英语-许国璋英语-

Some radioactive materials that give off harmful radiation, such as iodine-131, decay to harmless pollutants. Others, such as plutonium-239 produced by nuclear power plants, remains at harmful levels for thousands to hundreds of thousands of years

一些能放射出有害射线的放射性物质,如碘-131可衰变为无害的污染物。其它可降解的污染物,如核电厂产生的钚-239可维持在其有害水平上达数千万年。

属类：化学及生命科学-化学-

fireflies give off flashes of light when they fly at night

萤火虫夜间飞行时发出闪光。

属类：综合句库--

These rocks cool in a short time, for they are exposed to the air and give off heat and harden rather quickly. The mineral grains that form during this fast cooling do not have much time and chance to grow.

由于熔岩喷出地表接触空气，热散发快，岩石冷却结晶的时间短，岩石中矿物晶体没有足够的时间和机会生长。

属类：工程技术-地质-地质与勘探

Luminous jade wine cups are very famous for their special features and handicrafts. Made of jade from Mount Qilian, they are smooth, transparent, and varied in colors. Filled with wine, the cup can give off light in the moonlight.

玉雕夜光杯因其特殊效果和工艺而闻名。玉材取自祁连山,质地光滑透明,色彩各异,斟满酒的玉雕夜光杯在月光下会熠熠闪烁。

属类：行业术语-艺术-工艺

The lighter parts of the crude oil are used mainly for fuel, but each one differs from the others in the amount of heat it will give off

原油中那些较轻的部分主要用作燃料,但每一部分发出的热量各有不同。

属类：综合句库--

The moon does not give off light of its own

月亮自身不发光。

属类：综合句库--

These names come from the fact that the source of energy the nucleus, or core, of the atom, Nuclear fuels much as plutonium and uranium give off heat energy when fission (the splitting of atoms in these fuels)occurs.

这个名称来自于原子能来源于核、或者原子核这样的事实。当核燃料,例如钋(应该为钚)和铀,发生核裂变时释放出热能(这些燃料中原子发生分裂)。

属类：社会文化-新闻报道-

The flowers give off a heady scent at night.

这些花晚上散发出醉人的芳香。

属类：英汉句库--

These gas lasers give off a continuous beam.

这种气体激光器产生连续不断光束。

属类：综合句库--

To give off (vapor containing waste products)through the pores of the skin or the stomata of plant tissue.

蒸发通过皮肤毛孔或植物组织的气孔散发(含有废料的气体)

属类：综合句库--

Various fuels such as coal,gas,oil and food are common examples of chemical energy.These fuels give off heat when they burn.The process is called combustion or oxidation,and the heat itself is a form of energy.

最常见的化学能包括煤、天然气、石油、和食物等各种各样的燃料。当这些燃料燃烧时释放出热能。这个过程我们称之为燃烧或者氧化反应,同时热本身也是能量的一种形式。

属类：社会文化-新闻报道-