Borofluorhydric acid
[机] 氟硼酸
🧩 词语组成解析
🗣️ 情景例句
How many days will it take for my mail to reach its destination?
我的信件到达目的地要用几天？
What is the gate number?
登机门是几号？
It's time to tell her the truth.
是该告诉她真相的时候了。