Hayley教口語，“無緣無故”用英語怎么說？

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If you say that something happened or was done for no reason, for no good reason, or for no reason at all, you mean that there was no obvious reason why it happened or was done.

如果你說某事for no reason、for no reason at all或者for no good reason地發(fā)生，你的意思是它發(fā)生地毫無源頭，毫無原因，無緣無故。

The guards, he said, would punch them for no reason.

他說看守人員們會無緣無故地用拳頭打他們。

Grouchy people are always complaining for no reason.

滿腹牢騷的人總是毫無理由地抱怨。