每日长难句

That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels.

重点词汇

sustainableadj.可持续的yieldn.产量biomassn.生物量originaladj.原始的

句子成分分析

翻译讲解

That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels.

【参考译文】

这一点很重要，因为理论表明，当目标鱼种的生物量约为其原始水平的50%时，可持续捕捞的最大产量就会出现。

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