Running friction
[化] 动摩擦
🧩 词语组成解析
running
['rʌnɪŋ]
n. 跑步;运转;流出;
adj. 跑着的;流动的;连续的;操作中的，运转着的;
v. 跑;运转(run的ing形式);
🗣️ 情景例句
Oh, one minute.
噢 再等一分钟。
How long does it take to get there?
到那里要多少时间？
That's all right. Thank you. Goodbye!
好的。谢谢你，再见！