Air cylinder
[機] 汽缸
?? 詞語組成解析
air
[??]
n. 天空;氣氛;空運;（簡單易記的）曲調;
vt.& vi. 晾曬;烘干;播送;廣播;
vt. 使房間通風， 透氣;
??? 情景例句
But don't give up.
但是千萬不要放棄。
Two wrongs don't make a right.
兩個錯誤不能構成一個正確。
Even more processes are never patented at all but kept as secret processes.
更多的工藝過程根本就不會取得專利權，而是作為秘方保存著。