您要查找的是不是：
- Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。
- This reservoir is used to store water for our town. 这个水库是用来为我们小镇储存水的。
- His wife's death left him a vacuum in his life. 他妻子的去世使他的生活变得空虚。
- Her husband's death left a vacuum in her life. 她丈夫的死使她的生活变得空虚。
- Some people are living in a vacuum. 有些人过着与世隔绝的生活。
- A vacuum cleaner is a handy household tool. 吸尘器是一种使用方便的家庭用具。
- History is a reservoir of human experience. 历史是人类经历的总汇。
- The shop repairs vacuum cleaners. 这家店修理吸尘器。
- This reservoir supplies the entire city with water. 这个水库为全城供水。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
- They used to breed fish in the reservoir. 他们过去一直在水库养鱼。
- They open the sluice gates of reservoir. 他们打开水库的闸门。
- The show is a veritable reservoir of new talent. 这个演出真是新秀集萃。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- Sealed under low pressure or a partial vacuum. 抽空密封的在低压或部分真空状态下密封起来的
- The reservoir keeps flood from400000 hectares of land. 这个水库使40用项的土地免除了水灾的威胁。
- Dirt and dust are drawn into a vacuum cleaner by suction. 污物和灰尘被吸入吸尘器。
- We could not pull apart two plates which enclosed a vacuum. 如果两个盘子间是真空，我们就无法将它们分开。
- Operating by means of suction or by maintaining a partial vacuum. 抽真空的用吸取的方式或用维持部分真空的方式来运作的
- vacuum reservoir 真空储蓄器
