Ethylidenebichloride
[化] 亚乙基二氯; 1,1-二氯乙烷
🗣️ 情景例句
And take measures to reinforce them. Please set your mind at rest.
并采取措施加固。请放心好了。
When did you travel?
你什么时候旅行？
How would you go to Beijing, by air or by train?
你怎样去北京，是乘飞机还是坐火车？