中英释义：
重点词汇
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分贝
decibel; dB
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标准
standard; measure; level; template; criterion; scale; norm; mark; benchmark; yardstick; par; canon; plane; pure; normative; textbook; canonical
分贝
decibel; dB
标准
standard; measure; level; template; criterion; scale; norm; mark; benchmark; yardstick; par; canon; plane; pure; normative; textbook; canonical