按理说,两个成年人本该知道不该这样声嘶力竭地互相喊叫。

按理说,两个成年人本该知道不该这样声嘶力竭地互相喊叫。

Surely two grown-ups should have known better than to shout at each other at the top of their lungs.

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Surely two grown-ups should have known better than to shout at each other at the top of their lungs.

known 是动词 know 的过去分词形式,know 的意思是"知道、了解"。 better 在这里是副词 well 的比较级形式,表示"更明智地",也可理解为名词性用法,指"更妥当的做法"。 know better 是一个固定短语,意思是"因为更有经验而知道不该做某事",引申为"应该更明智些、不该犯这种错"。

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