Polyisobutylene
n. [化]聚异丁烯
🗣️ 情景例句
Sunrises. Stretch it out. Flat back.
双手捧日。尽量伸展。平背拉回。
Congratulations on your having a baby.
我恭喜你生了个宝宝。
He added that a student had dressed up as a policeman and was playing all sorts of silly jokes on people.
还对工人说，有个学生常装扮成警察无聊地同别人开玩笑。