Exceed 80 decibel not easily commonly - 90 decibel, listen to time to should not be more than 1 hour continuously, can rest a little while to listen again appropriately when necessary.
英
美
- 一般不易超过80分贝-90分贝,连续收听时间不宜超过1小时,必要时可适当休息一会再收听。