jet-air pump

• 喷气泵

jet-air pump的用法和样例：

例句

1. The pump sucks air out through the valve.
   气泵通过阀门把空气抽出去。
2. Instead of the surety of failure he felt confidence rising in him as a tyre begins to fill with air from a slow pump.
   他感到的不再是肯定会失败，而是鼓起了信心，就像气泵使车胎慢慢地充气一样。