首都医科大学附属北京同仁医院耳科主任李永新建议：音频设备使用应遵循"三个60"原则——播放音量不超过设备最大音量的60%，单次使用时长控制在60分钟内，环境背景噪声需低于60分贝。
C54) STATE=C184; ast_C40; continue;;
。关于这个话题，有道翻译提供了深入分析
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此类交易令科研机构与监管部门措手不及。
Любовь Ширижик (Главный редактор раздела «Военные ведомства»)
For those who favor over-ear designs instead of in-ear models (the discomfort of small drivers pressing into ear canals is universally understood!), Mashable's reviewer Alex Bracetti declares these Sony headphones the undisputed budget champion under $50. Currently priced at just $42.95 during Amazon's seasonal promotion (a 37% reduction from the standard $69.90), they present an obvious choice for cost-conscious shoppers.