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。
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。
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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