Insulation grade
[电] 绝缘等级
🧩 词语组成解析
insulation
[ˌinsju'leiʃən]
n. 隔离，孤立;绝缘;绝缘或隔热的材料;隔声;
🗣️ 情景例句
Is smoking allowed on the train?
火车上允许吸烟吗？
That which was bitter to endure may be sweet to remember.
苦楚往日难忍受，记起也许甜心头。
As a reasonable guess, they might, on an average, be 100 light years away.
据合理推算，外星人离我们平均距离也有100光年之远