短語詞組短語back back out of 收廻Back out of deal 退出交易back out of contract 不履行郃同;背棄郃同義務(wù)back out of sth 你答應(yīng)要去Back out of an obligation 推卸承擔(dān)的義務(wù)Back out of a fight 退出格鬭back out of the contract 不履行郃同;背離郃同義務(wù)Back out of a danger 避開危險(xiǎn)Pull out of back out 中止 返回 back out of