Cellon
四氯乙烷
??? 情景例句
Who am I, you old rascal?
我是誰 ？你這個老玩童。
Poverty is the mother of all arts.
貧困乃一切藝術(shù)之源。
She wanted to see the doctor because her back hurt.
她是來倫敦看望女兒的。她要看醫(yī)生是因為背痛。