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to retreat; to back off; to draw back; to step back; to shrink away
突然の蛇に後ずさった。
I stepped back from the sudden snake.
子供は大きな犬に後ずさって隠れた。
The child stepped back from the large dog and hid.
怒った主人に詰め寄られ、客は思わず後ずさる。
Confronted by the angry host, the guest instinctively steps back.