环境化学污染物严重威胁人类健康，目前对其毒性作用机制研究已逐步深入到细胞器和分子水平。
Environmental chemical pollutants affect human beings' health enormously. Nowadays studies on their toxicol actions have focused on organelle and molecular level of organism.
海洋沉积物已经成为海洋水体环境中持久性的、有毒的化学污染物的主要存贮地。
In a word, marine sediments has become the main reservoir of persistent and poison chemical pollutants in marine environment.
通常的结果是这些污染物改变了环境的化学组成。
Common results of such pollution are changes in the chemistry of the environment.
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