Nonrecurring
a. 不是一再发生的\\n[经] 临时业务, 偶生业务
🗣️ 情景例句
Mr Wang, I'd like you to meet my brother, Haitian.
王先生，我想请你见见我弟弟，海天。
You don't need to interrupt!
不用你插嘴！
And he promptly handed the sheet of paper to the gaoler.
说完，他一下子把信递给狱卒。