Polydiene
聚二烯
🗣️ 情景例句
Will it cost for the transfer?
转车要钱吗？
Experience is the father of wisdom and memory the mother.
经验是知识之父，记忆是知识之母。
The spheres had been magnetized and attracted or repelled each other all the time.
金属球经过磁化，互相之间不停地相互吸引或相互排斥。