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英语翻译theory suggests that the maximum sustainable yield that

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/24 07:49:19
英语翻译
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.Most fisheries are well below that,which is a bad way to do business.
里面的come是什么意思?
就是说“the maximum sustainable yield ”是在“the biomass of a target species is about 50% of its original levels”的时候才可能出现的,这里的come指的是出现,发生的意思.