Polyisobutene
聚异丁烯; 聚异丁烯
🗣️ 情景例句
I called my parents from the airport.
我从机场打电话给我父母。
All she cares about is her social life.
她关心的只是她的社交活动。
All products have to pass strict inspection before they go out.
所有产品出厂前必须要经过严格检查。