The why of these choices is often not clear - actually downright murky.
他做这些选择的原因我们一直不太清楚——实际上是完全不清楚。
So many zebra mussels exist in theGreat Lakes, constantly filtering water, that they've changed the waterfrom murky to clear, fiddling with the careful ecosystem balance.
五大湖存在非常多的斑马贝。 它们不断地过滤水,把混沌的水变得清澈,随意摆弄着谨慎的生态平衡。
Western leaders must make it clear, to him and their own people, that they will defend their Allies, and the alliance-even if the struggle is covert and murky.
西方领导人必须清楚,对他和其人民来说,他们将保卫他们的盟友以及同盟——即使这种斗争隐蔽且隐晦。
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