Undecylene
十一碳烯
🗣️ 情景例句
I'll go upstairs and stay with him until he falls asleep again.
我上楼去陪他， 直到他又睡着。
Who wrote that piece?
那首曲子是谁写的？
Those first words were to change my world.
我最先学会的这些单词改变了我的生活天地。