采用嗜热四膜虫模型，探讨在水体富营养化治理中三种铁系纳米材料的环境安全效应。
The environmental safety effect of nano-sized iron materials including Fe_3O_4, Fe_3O_4-zeolite composite and iron-doped zeolite was studied using a tetrahymena thermophila model.
这种 “附加工人效应” 可以加强失业保险或残疾保险提供的安全保障，帮助家庭渡过难关。
This "added-worker effect" could support the safety net offered by unemployment insurance or disability insurance to help families weather bad times.
不管现在英国的核工业看起来有多安全，它终会引起各种各样的效应。
However safe Britain's nuclear industry is deemed, it will spark reactions of a different sort.
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