Halon
鹵化烷（常用以滅火）
??? 情景例句
What are you up to?
你呢？你怎樣？
Don't make it any worse than you can help.
盡量不要把事情弄得更糟。
One would expect them to know their parts by heart and never have cause to falter.
人們以為，這些演員一定會把臺詞背得爛熟，絕不會臨場結巴的，