单词：noise level
[化] 噪声级
noise level的用法和样例：
例句
- "absolute principle, top priority"硬道理
- In the environment with lower noise level, the earplug will decrease its sound insulation factor accordingly to ensure the useful voice can be heard.在低声级环境中，其隔音量又足够低，可以保证能接收到一些有用的声信号。
- The ultimate noise levels are the same.最终的噪音水平是一样的。
- It's all dictated by the level of background noise in their listening environment.这些设置都取决于他们收听环境中的背景噪音水平。
- background level本底水准,背景值...
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