The instrument a doctor or nurse puts in their ears, with a small round metal disc on the end of a rubber tube, so they can hear the sounds inside your body — your heart beating, your lungs when you breathe in, sometimes your stomach. The doctor presses the cold disc on your chest or your back and says "breathe in, breathe out." It does not see anything; it only listens.

The instrument這個器材a doctor or nurse醫生或護士puts in their ears放進耳朵裡，with a small round metal disc尾端有個小小圓圓的金屬片on the end of a rubber tube接在橡膠管末端，so they can hear the sounds inside your body好讓他們聽見你身體裡的聲音——your heart beating你的心跳，your lungs when you breathe in你吸氣時肺部的聲音，sometimes your stomach有時候是你的胃。The doctor醫生presses the cold disc把冰冰的那片壓on your chest or your back在你的胸口或背上，and says然後說"breathe in, breathe out."「吸氣、吐氣」。It它does not see anything看不到任何東西；it它only listens只是用來聽的。

That is worth saying because students sometimes think it is a scanner of some kind. It is closer to putting your ear on someone's chest — which is exactly what doctors did before this was invented.

That is worth saying這點值得一提，because students因為學生們sometimes有時候think以為it is a scanner of some kind它是某種掃描儀器。It is closer to它比較接近於putting your ear on someone's chest把耳朵貼在別人胸口——which is exactly what doctors did而這正是醫生們的做法，before this was invented在這東西發明以前。

It is a very ordinary, everyday word in a hospital, not a technical one, and it is the thing everyone pictures when they picture a doctor at all: hanging around the neck in every hospital drama, on the sign outside a clinic. Because of that it has become a kind of symbol — if you see a stethoscope in a picture, you know the picture is about medicine. You almost never meet the word outside of doctors, animals doctors, and pictures of them.

It is它是a very ordinary, everyday word一個非常普通、日常的字in a hospital在醫院裡用，not a technical one不是什麼專業術語，and it is the thing而且它就是everyone pictures大家會想到的東西when they picture a doctor at all一想到醫生的時候：hanging around the neck掛在脖子上，in every hospital drama出現在每部醫院劇裡，on the sign outside a clinic也出現在診所外面的招牌上。Because of that因為這樣it has become a kind of symbol它變成一種象徵——if you see a stethoscope in a picture如果你在一張圖片裡看到聽診器，you know the picture is about medicine就知道這張圖跟醫療有關。You almost never meet the word你幾乎不會遇到這個字outside of除了doctors, animal doctors醫生、獸醫，and pictures of them還有他們的圖片以外。

It is a noun. There is a verb 'to stethoscope', but honestly you can go your whole life without hearing anyone use it, and you should not.

It is它是a noun名詞。There is有a verb 'to stethoscope'一個動詞'to stethoscope'，but honestly不過老實說you can go your whole life你這輩子without hearing anyone use it大概都不會聽到有人用它，and you should not而且你也不該用。