What is treadmill?
什么是跑步机？
Pronunciation: /ˈtred.mɪl/
发音：/ˈtred.mɪl/
Meaning: A treadmill is a machine that has a moving belt you can walk or run on, staying in one place.
意思是跑步机是一种带有移动带的机器，你可以在上面行走或跑步，保持在一个地方。
Sentence: I saw my big sister running on the treadmill to exercise indoors!
句子我看到大姐姐在跑步机上跑步，在室内锻炼身体！