Tribological
a. 摩擦学的
🗣️ 情景例句
What currency do they use in U.S.A.?
在美国人们用什么货币？
I like collecting stamps.
我喜欢收集邮票。
We are lucky in that only the lower fields, which make up a very small proportion of our farm, are effected by flooding,
值得庆幸的是，只有低洼的受到洪水影响，而低洼地在我们农场比例很小。