Umbellulone
[化] 加州月桂酮\\n[医] 伞桂酮
🗣️ 情景例句
He's an aerospace engineer,and works for Orlando Aircraft Corporation.
他担任航太工程师，为Orlando飞机公司工作。
Would you let me know your fax number?
可以告诉我您的传真机号码吗？
That's a big box. Is it heavy? Please let me help you.
这是个大盒子。重吗？让我来帮你。