The biological component of wetland design is often neglected.

人们往往忽视湿地设计的生物组成部分。

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All BAL devices contain hepatocytes as their biological component.

所有的生物人工肝均含有肝细胞作为其生物组分。

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The influence of the biological component on ecosystem is often greater in fresh waters than in marine or terrestrial systems, because of the small size of many freshwater bodies.

由于很多淡水水体体积很小，所以生物成分在淡水中对生态系统的影响通常要比在海水或土壤中对生态系统的影响大。

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The problem is they forgot to include a meaningful biological component.

ECONOMIST: Biowarfare could be the worst terrorist threat of all