Fluoropentachloroethane
(一) 氟五氯乙烷
??? 情景例句
What's your occupation?
你的職業是什么？
I guess I've outgrown this pair of trousers.
我想這條褲子對我來說小了。
it has to develop (partly by means of touch) the ability to judge roughly three-dimensonal distances.
兒童必須發展（部分通過觸覺）粗略判斷三維空間距離的能力。