Chlorofluorination
氯氟化(作用)
🗣️ 情景例句
What time is it?
现在是什么时间了？
Happy is he who knows his follies in his youth.
记得青年时所做的愚笨事的人是幸福的。
Football is a very popular game in China. Many young people like it.
足球在中国是一项很受欢迎的运动。许多年轻人喜欢足球。