Tribology
n. 摩擦学
🗣️ 情景例句
It's hard to say. I like volleyball a lot, but I guess I like tennis better.
很难说，我喜欢排球，但我想我比较喜欢网球。
He has a sweeter.
他有一件毛衣。
He talks as if he were the head of the office.
他说话的口气像办公室主任似的。