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
Uh-hum.
嗯哼。
We are not born for ourselves.
人生非为己。
Hello, Zhou Lan. This is Bruce.
你好，周兰。我是布鲁斯。