Olefinicpolymerization
[化] 烯烃聚合
🗣️ 情景例句
In fact, I'd like your autograph.
事实上 我想要你的签名。
Please don't get angry at me.
请不要生我的气。
The trainer stands in front of the elephant holding a long stick with a sharp metal point.
驯练员手持一根有锋利金属尖头的长棒，站在象前。