Zerolite
(低温膨胀的)聚苯乙烯管状绝缘体
🗣️ 情景例句
Since I retired,
自从我退休以后，
When you visit an American home.
在你访问一户美国人家时
I doubt if he'll be asked to speak again next year.
我怀疑明年是否还会邀请他作报告。