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
I don't drink, but today is an exception.
我是不喝酒的，但今天例外。
Perseverance is failing nineteen times and succeeding the twentieth.
十九次失败，到第二十次获得成功，这就叫坚持。
Ann, thanks a lot for asking me to your party. I'd love to come.
安，非常感谢你邀请我参加你的聚会。我很乐意去。