硝酸盐是水和土壤里天然存在的化学物质。
Nitrates are chemicals that occur naturally in water and the soil.
并非所有正常存在于活的有机体中的化学物质都是无害的。
Not all chemicals normally present in living organisms are harmless.
有几种化学物质取代了氧气。
这种新的化学物质还会造成神经损伤。
一旦闻到化学物质,请立即与同学交谈。
Once you smell chemicals, immediately talk with your classmates.
这些化学物质是来自核电站的受损部分。
These chemicals come from the injured parts of the nuclear plant.
毒品是一种化学物质。
化学物质的蒸发对它们的生存是必不可少的。
The evaporation of chemicals is necessary for their survival.
第三种是某些基本的化学物质,如碳、氧和氮。
A third is certain basic chemicals such as carbon, oxygen and nitrogen.
鱼和其他食肉动物的体内会积累大量的化学物质。
The bodies of fish and other meat-eaters can build up high levels of the chemicals.
鲑鱼在河流和海洋之间迁徙时也会携带危险的化学物质。
Salmon also carry dangerous chemicals as the fish migrate between rivers and the sea.
科学家们认为,在木卫二的海底可能存在这样的化学物质。
Scientists believe there might be such chemicals lying at the bottom of Europa's ocean.
很明显,有一些不属于我们身体的化学物质存在在我们身体中。
Clearly, there are chemicals in our bodies that don't belong there.
它会对你体内的化学物质产生立竿见影的效果。
另一种流行的化学物质是三丁基锡。
信念是重要元素、“化学物质”。
化学物质及它们会造成的伤害。
放焰火会散落大量有毒的化学物质。
这两种化学物质在一定的温度下相互作用。
These two chemicals interact with each other at a certain temperature.
大量化妆品包含有害身体的化学物质。
A lot of cosmetics contain chemicals that are harmful to the body.
首先,普通的保健品充斥着化学物质。
First of all, regular health products are filled with chemicals.
这些化学物质就产生了青春期的气味。
即使是婴儿香波有时也含有化学物质。
还有第三种脑化学物质也是不可或缺的。
还有另一风险:化学物质。
某些化学物质被混到一起时,就会产生热。
Whenever certain chemicals are mixed together, heat is produced.
药物可以改善那些影响情绪的脑化学物质的平衡性。
These medicines can improve the balance of brain chemicals that affect mood.
要想得到晶体,首先要有化学物质,这是前提和基础。
To be crystal, first of all have chemicals, which is the prerequisite and foundation.
所有的化学物质都有毒性,但是它们都有个剂量问题。
所有的化学物质都有毒性,但是它们都有个剂量问题。
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