Monochlorination
一氯化作用
🗣️ 情景例句
I have learned to use computers and have become familiar with all clerical duties.
我学会使用电脑及熟悉所有文员的工作。
How did you do it?
你是怎样达成它的？
Are you all in the same school?
你们在同一个学校吗？