Retzius' striae
[医] 雷济厄斯氏纹(棕色纹见于牙釉质)
🧩 词语组成解析
[医] 纹
🗣️ 情景例句
There are several tours of the Grand Canyon.
到大峡谷有好几个旅游团。
Serves you right!
活该！
How old are you?
您多大岁数了？