The policeman congratulated the assistant on her quick work. 警察稱讚那位助理員辦事迅速。
While chimpanzees nested in trees at night, a field assistant below them caught urine in a plastic bag held between a forked twig. 當晚上黑猩猩棲居於樹上的時候，一個農林助理員通過在一個叉形的樹杈上固定塑料袋的形式來收集黑猩猩的尿液。
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