John took his umbrella to be on the safe side.

約翰帶上雨傘以防萬(wàn)一。

語(yǔ)言點(diǎn)：to be on the safe side的意思是to be safe; to be cautious; to be very well prepared，也就是“為了保險(xiǎn)起見(jiàn)，以防萬(wàn)一”。

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