Chlorodifluormethane
[机] 氯二氟甲烷
🗣️ 情景例句
What am I supposed to do?
我该做什么？，
Times have changed.
此一时也，彼一时也。
Just then, the gaoler appeared with the precious letter in his bands.
这时狱卒上场，手里拿着那封珍贵的信。