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。
- There was a nice red tick in the margin. 边上打了一个漂亮的红勾。
- 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。
- She won by a comfortable margin. 她获胜成绩远远超过其他人。
- 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。
- The shop repairs vacuum cleaners. 这家店修理吸尘器。
- Put a mark in the margin to show the omission. 在页边作个记号表示有遗漏。
- The porter turned off the vacuum. 清洁工关掉真空吸尘器。
- This price will allow a good margin of profit. 这一价格可获厚利。
- We came to the margin of the wood. 我们来到树林的边缘。
- He made some notes in the margin. 他在页边空白处做笔记。
- Tom passed the examination by a narrow margin. 汤姆考试勉强及格。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- She win the seat by a margin of ten votes. 她以十票优势赢得席位。
- 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
- He backed the car into the space with a narrow margin to spare. 他将车倒进一个非常窄的停车位置。
- Leave a good safety margin between your car and the next. 要在你的汽车和另一辆车之间留出一段足够的安全距离。
- The little boy likes to make notes in the margin of books. 小男孩喜欢在书页空白边上做笔记。
