Polyacetylenes
多炔
🗣️ 情景例句
Mr. Lu, everything is OK. Your booking is from today through Wendnsday. Single room.
陆先生，没问题的。您从今天订到星期三，单人房。
The consignment appears to have been roughly handled and left near a heater.
看来货物未受到细心的处理，并且被放置于加热器附近。
This is my shirt.My shirt's blue.
这是我的衬衫。我的衬衫是蓝色的。