Levorphanol
[医] 左吗啡(商品名,左旋-3-羟-N-甲基吗啡烷,止痛药)
🗣️ 情景例句
What was your best subject in college?
大学时你哪门功课最好？
Do you ever study English on Sunday?
你曾经在星期日学英文吗？
Yes, he did.He telephoned at nine o'clock.
是的，打了。他在9点钟又打电话。