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
I think I can stay at home
我觉得我可以待在家
Missing school to watch the football match is out of the question.
为看足球赛而旷课，那可不行。
Do you have to feed plants like you feed chickens? Or do they grow up by themselves?
你得要像喂小鸡那样去喂幼苗吗？还是它们自己长大呢？