he said he could swim but he backed down when we got to the lake
他说他会游泳，但我们一到湖边他就退缩了
以上为机器翻译结果，长、整句建议使用 人工翻译 。
He said he could swim, but he backed down when we got to the lake.
他说他会泅水，但是等咱们到了湖边他却畏缩不前了。
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