Polychlorocarbon
[化] 多氯烃; 多氯代烃
🗣️ 情景例句
Second, we have to make an effort to encourage American companies to do business in our country.
第二，我们必须鼓励美国公司在我国开展业务。
Your English is very good.
你的英语很好。
Are they with you in China?
他们都和你一块儿在中国吗？