pneumatic

柯林斯词典

1. ADJ A pneumatic drill is operated by air under pressure and is very powerful. Pneumatic drills are often used for digging up roads. (鑽頭)氣動的; 風動的[ADJ n]
...the sound of a pneumatic drill hammering away. ...風鑽鑽個不停的轟鳴聲。
2. ADJ Pneumatic means filled with air. 充氣的[ADJ n]
...pneumatic tyres. ...充氣輪胎。