That leaves a lot of room for interpretation. If headphones have an 85dB limit, does that mean that: Headphones never surpass 85dB? Or the average loudness is 85dB, yet sometimes headphones surpass the target loudness? Furthermore, manufacturers don’t disclaim whether they’re using dBa or ...
Headphones rest on your outer ears. Supra-aural models cover your entire ear surfaces but don't entirely seal them. Over-the-ear models, or circumaurals, fully enclose each ear (think of the ear coverings worn by those who work on airstrips, or inside noisy factories). The biggest advant...
Follow the advice above now and you won't be saying "What?" when you are getting old.答案 1. 【答案】 I should see a doctor. 【解析】 细节理解题。根据See a doctor if your ears hurt.如果耳朵痛,看医生。故答案为:I should see a doctor.。 2. 【答案】 Yes, it...