Boratofluoric acid
[化] 氟硼酸
🧩 词语组成解析
🗣️ 情景例句
I'm delighted to make your acquaintance.
认识你我觉得非常高兴。
which direction is it to the theatre?
它哪个方向对剧院？
I don't know. I can't see!
我不知道，我看不见。