Photodechlorination
光去氯(作用)
🗣️ 情景例句
How did you get to know her?
你是怎么认识她的？
The doctor said I should stop smoking cigarettes.
医生劝告我戒烟。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。