Chlorofluorination
氯氟化(作用)
🗣️ 情景例句
Win a few, lose a few. that's life.
有得也有失，生活就是如此。
Poli-sci major
专攻政治社会学
Whose is this shirt? Is this yours, Li Lei?
这是谁的衬衫？是你的吗？李磊？