They are told how sensitive each species is to pollution, and asked to work out from this how polluted the pond is.
他告诉孩子们每一种昆虫对污染的敏感性,并要求他们据此推算出池塘的污染程度。
Unfortunately, this function also makes estuaries very sensitive to environmental pollution.
不幸的是,这种功能使河口对环境污染非常敏感。
Unfortunately, , this function also makes estuaries very sensitive to enviro-mental pollution.
不幸的是, 髧这个作用也使河口对环境污染很敏感。
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