Polyacetylen
聚乙炔; 聚乙炔
🗣️ 情景例句
Thank you. I don't believe this.
谢谢。我简直不敢相信。
I'm combing my hair in the bathroom.
我在浴室梳头。
Many owners of private cars are going to offer 'free rides' to people on their way to work.
很多私人汽车的车主正准备为乘车上班的人们提供“免费乘车”的服务，