Vilan
[医]二烟酰吗啡（麻醉性镇痛药）
🗣️ 情景例句
I have been talking to a group of salesmen
我一直在与一群推销人员谈话
The buyer has the option of cancelling the contract.
买主有权撤消合同。
I'll have to stay at the office.I don't know when I'll finish.
我不得不留在办公室，不知道什么时候才能结束。