Polydicyclopentadiene
[化] 聚双环戊二烯
🗣️ 情景例句
Stay ... stay.
再待一会儿……再一会儿。
A word spoken is an arrow let fly.
一言既出，驷马难追。
Open the door, please, Lucy. Lily, is she opening the door?
露茜，请把门打开。莉莉，她在开门吗？