air filtration

• 空气过滤

air filtration的用法和样例：

例句

1. Even the air filtered down greenly through the leaves.
   即使是空气过滤下跌格林利通过树叶。
2. An air filter system eliminates any dust that might clog up the movements.
   空气过滤系统可以消除空气中的尘埃，以免阻塞机芯的运作。