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1·Disconsolately, he walked back down the course.

他郁郁不乐地沿原路走回去了。《柯林斯英汉双解大词典》

2·She refused to back down on a point of principle.

她在一个原则问题上拒绝让步。《牛津词典》

3·You gently back down.

你轻轻放弃了。

4·It's too late to back down now.

现在打退堂鼓为时已晚。《柯林斯英汉双解大词典》

5·He freewheeled back down the course.

他靠惯性滑行返回路途。《柯林斯英汉双解大词典》

6·We retreated back down the mountain.

我们从山上撤了下来。《牛津词典》

7·The car began to roll back down the hill.

汽车开始倒着往山下滑。《牛津词典》

8·I drove back down the motorway at normal speed.

我以正常速度沿高速公路往回开。《柯林斯英汉双解大词典》

9·They make threats but back down at the first sniff of trouble.

他们起先气势汹汹，但一看情形不妙立刻软了下来。《牛津词典》

10·He ran back down the stairs with the map in his hand.

他手里拿着地图跑下楼梯。