Dichlorethylene
二氯乙烯
🗣️ 情景例句
We will help your children in learning lessons in their free time.
我们可以帮助您的孩子在他们空闲时学习功课。
What time do you finish your work?
你什么时候下班？
What did you eat yesterday?
你昨天吃了什么呢？