Acetylene gas
[機] 乙炔氣
?? 詞語組成解析
n. 乙炔, 電石氣\\n[化] 乙炔; 雙亞乙基
gas
[g?s]
n. 氣體;[礦業] 瓦斯;汽油;毒氣;
vt. 加油;毒（死）;
vi. 加油;放出氣體;空談;
int. 該死?。钊藲鈶嵉娜藨幢凰投練馐姨幩溃?
??? 情景例句
so I can study it.
以便我好好研究。
When the wound is healed, the pain is forgotten.
好了傷疤忘了痛。
I think you had better come out to the factory.
我看你最好走一趟工廠，