Serration
n. 鋸齒狀, 鋸齒邊\\n[醫(yī)] 鋸齒形, 鋸齒構(gòu)造
?? 牛津釋義
serration
n
1 [U] being serrated 鋸齒狀.
2 C] notch on a serrated edge 鋸齒形邊緣的凹口.
??? 情景例句
This is Mr. Wu in Room 415.
我在415房間，姓巫。
Who minds his own business has no time to mind other folks.
為人只顧自己事，就無時(shí)間關(guān)心人。
Yes, very nice, thank you.
是的，非常愉快，謝謝。