Impurity levels
[电] 杂质能阶
🧩 词语组成解析
n. 色阶调整；控制色阶；水平, 标准（level复数形式）
🗣️ 情景例句
Friends, teachers....
朋友 老师……
There was a big choice of shops in the small town.
这个小镇上有好多商店可供选择。
Over the years, one may well become a authority on one's hobby and will very probably be asked to give informal talks to little gatherings and then,
一人积了多年经验会成为自己这种爱好的权威，很可能应邀在小型集会上作非正式的讲话。