In the phonograph parlors, customers listened to recordings through individual ear tubes, moving from one machine to the next to hear different recorded speeches or pieces of music.

在留声机厅里，顾客通过单只耳道听录音，从一台机器转到另一台，听不同的演讲录音或音乐片段。

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Holes result from either injury or prior ear problems, such as ear tubes.

外伤或耳部先前的疾病(比如耳道)结果导致耳膜穿孔。

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The surgeries ranged from those for serious problems, like open heart surgery, to more routine ones, like putting in ear tubes or removing adenoids and tonsils.

外科手术涉及那些严重的疾病问题，比如心脏手术。更多是日常的手术，比如进入耳道或切除腺样体和扁桃体。

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