Serration
n. 锯齿状, 锯齿边\\n[医] 锯齿形, 锯齿构造
📖 牛津释义
serration
n
1 [U] being serrated 锯齿状.
2 C] notch on a serrated edge 锯齿形边缘的凹口.
🗣️ 情景例句
Will you excuse me?
我失陪了
Every day of thy life is a leaf in thy history.
生命中的一天就是你历史上的一页。
The doctor began to operate on the boy.
医生开始给那个男孩动手术。