Tetrafluoromethane
[化] 四氟化碳
??? 情景例句
with two or three other college friends.
邀兩到三個其他的大學朋友一起。
A full cup must be carried steadily.
杯滿盈，須持穩(wěn)。
It is all ready to go.
貨已經(jīng)準備好等著出了。