Impurity semiconductor
[电] 杂质半导体
🧩 词语组成解析
🗣️ 情景例句
It is generally believed that Chinese are poor public speakers.
一般认为中国人不擅长公众演讲。
He might have been held up in a traffic jam.
他可能因交通阻塞而耽搁了。
They devise hundreds of competitions which will enable us to win huge sums of money.
他们设计数以百计的竞赛，竞赛中有人可赢得巨额奖金。