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
He was our go-between.
他是我们的媒人。
Think nothing of it.
别放在心上。
No, I'm not.I'm going to retire.I feel very tired.
不，我不准备拍了。我准备退休了。我感觉累得很。