Even the best hearing aid will sound "flat" or "dull" when worn in only one ear.

即使是最好的助听器，将良好的“单位”或“平淡”时，佩戴在只有一个耳朵。

youdao

Even the best hearing aid will sound "flat" or "dull" when worn in only one ear.

即使是最好的助听器，将良好的“单位”或“平淡”时，佩戴在只有一个耳朵。

youdao