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。
- 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。
- The concrete walls are reinforced with steel rods. 混凝土墙是用钢筋加固的。
- 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。
- We need a hoist to lift the concrete blocks. 我们需要一台起重机来吊起混凝土块。
- The shop repairs vacuum cleaners. 这家店修理吸尘器。
- The machine rests on a bed of concrete. 机器安装在混凝土基座上。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- That new concrete building is an abomination. 那座新混凝土建筑是个讨厌的东西。
- The road was paved with concrete. 路面由混凝土铺成。
- 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
- Have you got any concrete proposals? 你有没有具体的建议呢?
- The house is made of stone, not concrete. 那房子是石造的，不是混凝土造的。
- Tom tumbled over and hit his head on the concrete. 汤姆摔倒，头撞到水泥地。
- The statue rests on a bed of concrete. 这座雕像立在混凝土的基座上。
- The front of the house was faced with concrete. 房屋正面涂著一层混凝土。
- In the concrete, the theory is far from perfect. 实际上,这一理论远远不够完善。
