副词
中文翻译：关于的
同义词：
['relevant', 'appropriate']
例句：
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1.The book is apropos of the topic we were discussing last night.
这本书与我们昨晚讨论的话题非常相关。
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2.She wore an apropos dress for the occasion.
她穿着一件合适的连衣裙参加那个场合。
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3.The decision was apropos to the situation at hand.
这个决定对当前的情况来说是恰当的。