N-COUNT The earpiece of a telephone receiver, hearing aid, or other device is the part that you hold up to your ear or put into your ear. (电话的)听筒; (助听器的)耳塞
Nobody has conducted research looking at the health effects of Bluetooth earpieces.
没有人研究过蓝牙耳机会不会对健康造成影响。
Speaking of headsets, are Bluetooth earpieces safer than putting a cellphone to the ear?
说到耳机,使用蓝牙耳机会比直接用手机对着耳朵要安全吗?
Small mikes are easier to fit into earpieces, and recently they have been getting very small indeed.
微型麦克会更容易装进听筒,并且现在确实可以制造出非常小的麦克风。
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