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1·The enemy fell back as our troops advanced.

我军部队挺进，敌军向后撤退。《牛津词典》

2·He pushed her away and she fell back on the wooden bench.

他把她推开，然后她向后跌坐在长木椅上。《柯林斯英汉双解大词典》

3·The throng fell back, stupefied.

人群向后退去，惊呆了。

4·Instantly he disengaged himself, fell back a pace, and waited all attention.

他立刻挣脱出来，往后退了一步，全神贯注地等待着。

5·She fell back towards the end of the race.

赛跑快结束时她落后了。《牛津词典》

6·He fell back onto the sofa in a drunken stupor.

他烂醉如泥，瘫倒在沙发上。《柯林斯英汉双解大词典》

7·She fell back on her usual excuse of having no time.

她以她惯用的办法推说没有时间。《牛津词典》

8·The Belgians fell back as the infantry came under fire.

比利时人在步兵部队遭到炮火袭击时撤退了。《柯林斯英汉双解大词典》

9·The King fell back upon his couch.

国王倒在他的床上。

10·Dr. Craven started in actual alarm and Mrs. Medlock almost fell back because he had accidentally bumped against her.

克雷文医生着实吓了一跳，他不小心撞到了梅德洛克太太，害得她差点摔倒。

后退

1·We charged and the enemy's front line fell back.

我们发起了冲锋，敌人的前线被迫后退。

2·She fell back with a little cry as I entered.

看到我进来，她向后退了几步，还有一点小啜泣。

3·We charged and the enemy's front line fell back.

我们一冲锋，敌人的阵线就后退了。

4·The crowd fell back to let the players through.

人群后退让运动员们通过。

5·The crowd fell back to let the doctor through.

人群向后退，让医生过去。