Everyone around him was trying to be polite, but you could tell they were all bored...
他周围的每一个人都极力表现出彬彬有礼的样子,但能够看出他们都感到厌烦。
《柯林斯高阶英汉双解学习词典》
He can be very rube in private, though he is usually polite in public.
他私下可能很粗鲁, 但在大众面前通常彬彬有礼.
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I thought he was quite pleasant and, a few days later, I asked a mutual friend about him.
当时,我觉得他彬彬有礼,几天后我跟一个共同的朋友问起了他。
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