Dichloroethane
二氯乙烷
🗣️ 情景例句
I know. How old is she?
我知道。她多大了？
What were you doing when I called?
我打电话给你时你在干吗？
America, Russia and Europe are filled with enthusiasts----
美国、俄罗斯和欧洲都有许多热心此项事业的人