pull n.& vt.拉力；拖；牵引力

pull down拆毁

pull in 火车等到站，进站；驶向路边或某处停靠

pull through康复，痊愈；渡过难关

pull up停车，停止

(1)Steam engines were used to pull the carriages.

蒸汽机过去被用来拉动四轮车。(2017·全国Ⅱ)

(2)Some old buildings have been pulled down in this area.这个地区的一些旧建筑已被拆掉。

(3)Don't worry；your father is going to pull through.

不要担心，你父亲会康复的。

3．I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.

我立刻感到高兴起来，由于失重我在太空舱里飘来飘去，我望着地球越来越小，而月球越来越大。

(1)cheer (sb./sth.) up (使)感到高兴；(使)感到振奋

cheer v．& n．欢呼，喝彩，加油

cheer sb.on为某人加油

(2)cheerful adj.高兴的；兴高采烈的

(3)Cheers！干杯！

(1)Cheer up！We are near the finishing line.

打起精神，我们临近终点线了。

(2)Cathy didn't expect any award but was still there to cheer on her friends.凯西没有期待任何奖励，但是仍旧在那里为她的朋友们加油鼓劲。

(3)They are both very cheerful(cheer) in spite of their colds.

他俩虽然感冒了，但是都兴高采烈的。

(4)Cheers(cheer)！Congratulations on your success!

干杯！祝贺你获得了成功！

4．We watched，amazed as fire broke out on the outside of the spaceship as the earth's gravity increased.

我们惊奇地看着，随着地球的引力增加，宇宙飞船的外层燃烧起火。

break out 战争、火灾等突发；爆发

break away from脱离；逃脱

break down出故障，坏掉；失败；健康等垮掉

break in插话；破门而入

break into破门而入

break up粉碎；解散；分手