Hexahydropyridine
[化] 哌啶
🗣️ 情景例句
I need a new toothbrush. My old one's worn out.
我需要一支新牙刷。旧的用坏了。
Hi, thief! Would you stop that music for me?
喂，小偷兄，你能替我把音乐关掉吗？
'Why are you doing that?' Sally asked.
“你为什么要那样做呢？”萨莉问。