Polyalkane
聚链烷
🗣️ 情景例句
It just depends on a number of things.
这得靠许多因素才能决定。
Mr. Ken Robert comes to us from the University of Kentucky where he is majoring in economics.
罗伯特.金先生来自肯塔基大学，主修经济学。
Thank you. Lucy and Lily, come here, please.
谢谢你，露茜和莉莉，请过来吧！