您要查找的是不是：
- fumble at a lock （对不准锁孔）摸索着开锁
- Imagine a lock on the copy machine for which only one worker can possess a key at a time. 假想给复印机上锁,任一时刻只有一个职员拥有钥匙。
- The tiger in the cage gnawed listlessly at a bone. 笼子里的老虎在没精打采地啃一根骨头。
- He will sell his house at a sacrifice because he needs money. 因为他缺钱，他将亏本出售他的房子。
- A variety of food is sold at a supermarket. 超级市场各式各样的食物均有出售。
- A live band is always a good draw at a party. 现场演奏的乐队在聚会上总是很吸引人的。
- At a distance of six miles you can't see much. 距离六英里以外的东西很难看清。
- Before he could even fumble at his belt, she pulled the trigger. 那人正要伸手到枪袋里，这边已经扳动枪机了。
- Only one thread at a time may acquire ownership of alock, so a lock may be used to serialize access to code or a program state. 因此锁定可以用来串行化地访问代码或者程序状态。
- He used to abandon his work for months at a time. 他过去每次放下工作就是几个月。
- We can get six people round this table at a pinch. 必要时这张桌子可以坐六个人。
- I want to sing at a karaoke bar next. 接下来，我想去卡拉OK酒吧唱歌。
- She cocked her hat at a jaunty angle. 她把帽子歪戴着,一副俏皮的样子。
- The old man set off at a quick trot. 老人快步走开了。
- I heard him fumbling at the lock, his hands stiff, his mind numbed. 我听见他在锁上摸索，他的手僵硬了，他的脑袋发木了。
- You may open a current account at a bank. 你可以在银行开立一个活期帐户。
- I got this cheap at a department store sale. 我在百货公司特价廉售时买到了这件便宜货。
- I will sell the house at a price within reason. 我将以合理的价格出售这幢房子。
- He tossed the peanuts into his mouth one at a time. 他每次将一粒花生扔进嘴里。
- She was giggling at a letter from a boy. 她正对着一男生写给她的信吃吃地笑着。
