Piperylene
戊间二烯
🗣️ 情景例句
He started with them almost forty years ago.
他在那里做了快四十年了。
I wish you would give me a more detailed description of your trip.
我希望你将给我更详细地描述你的旅行。
Let's ask this policeman. He may know.
咱们问问这位警察。他可能知道。