Polydiolefin
聚二烯烃
🗣️ 情景例句
He landed another job soon after he left his former company.
他离开以前的公司后很快找到了另一份工作。
The darkest hour is that before the dawn.
黎明前是最黑暗的时刻。
At the age of eight, he joined a group of child dancers.
8岁时参加了儿童舞蹈团。