rear suction

• 后端吸力

rear suction的用法和样例：

例句

1. 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。
2. Flies' feet stick to surfaces by suction.
   苍蝇的脚借吸力可附着于物体表面上。