您要查找的是不是：
- He dropped up his guard. 他未做出防御姿势。
- The boxer led with the chin when he dropped his guard as he moved forward. 这个拳击手向前进攻时，失去警惕，露弱弱点而遭到对方攻击。
- Soon after the match resumed, his opponent made a critical mistake: he dropped his guard. 很快比赛重新开始了，他的对手犯了个关键的错误：他放松了他的防御。
- He made up his mind never to touch a drop of drink. 他决心不再喝酒。
- He dropped back into his old habit of drinking. 他又恢复喝酒的老习惯。
- He had an accident and bashed up his car. 他出了交通事故，把车子撞毁了。
- He packed up his things and left. 他把东西装进箱子里就动身了。
- He had to lay up his legs till they got well. 他得在睡椅上伸展两腿，一直到放好位置为止。
- He quirked up his nose to make a face. 他鼻子一扬作了个鬼脸。
- He girded up his loin to face his competitor. 他做好准备来迎战他的对手。
- He banged up his knee in me race. 他在比赛中把膝盖弄伤了。
- He dropped his voice for fear be might be overheard. 他放低了声音，唯恐被别人听见。
- He picked up his knife and fork. 他捡起了刀叉。
- He dropped in on us last Sunday. 上星期天他来看我们了。
- He snatched up his gun and fired. 他突然拿起枪来射击。
- He hit him when his guard was down. 他乘其不备击中了他。
- He dropped by to see us yesterday. 昨天他顺便来看过我们。
- He asked the teacher to touch up his picture. 他请老师把他的画修改提高一下。
- He drop out because of the pressure. 由于校规很严，所以他退学了。
- The clerk marked up his daybook before going home. 办事员在回家前记好当天的日记帐。
