Fluorines
(fluorine 的复数) n. 氟\\n[化] 氟
🗣️ 情景例句
It's not easy being away from home.
离家独闯不容易。
Of nothing comes nothing.
无中不能生有。
They were expecting their sixth child and were faced with even more pressing economic problems.
第6个孩子即将问世，他们面临着更为严峻的经济问题。