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
Many advertisements exaggerate the usefulness of the products.
很多广告都夸大了产品的效用。
A little labour,much health.
适量的劳动大有益于健康。
She was too excited to do any housework that morning,
那天上午，她兴奋得什么家务活都不想做，