Arcus unguium
[医] 爪甲弧影
🧩 词语组成解析
[医] 弓
🗣️ 情景例句
I'm Ralph Riley.
我叫Ralph Riley。
You are brighter than I am.
你比我聪明。
and at the most critical juncture we took turns in watching that point.
在最紧急的时刻，我们轮流监视那段河流的险情。