Boroxin
环硼氧烷
🗣️ 情景例句
He should just about get by in the exam.
他这次考试还能勉强及格。
It is one thing to speak much and another to speak pertinently.
话讲得多是一回事，讲得恰当是另一回事。
Are you free this Saturday?
你这个星期六有空吗？