If some creatures can tolerate lower pHs and others cannot, you might expect things to average out: the tolerant and adaptable prosper, the more pernickety perish.
如果一部分生物能够容忍更低的PH值而另一部分不能，那么你可能会倾向得出某种均衡：那些能够适应的物种繁荣昌盛，那些不能适应的物种则随之灭绝。
Customs officials can get extremely pernickety about things like that.
海关官员可能会对那种东西极度吹毛求疵。
Customs officials can get extremely pernickety about things like that.
海关官员可能会对那种东西极度吹毛求疵。
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