Ulmin
[化]棕腐质, 赤榆树脂
🔁 扩展释义
【医】 赤榆树脂
🗣️ 情景例句
and I have a production meeting at four.
我四点钟有个生产会议。
You have a younger brother, don't you?
你有个弟弟，是吗？
How are you doing?
你好吗？