fingernails
n. 指甲；手指甲（fingernail 的复数形式）
例句
She gnawed at her fingernails.
她咬手指甲。
《牛津词典》
His fingernails had grown long and horny.
他的手指甲长得又长又硬。
《柯林斯英汉双解大词典》
There might be scrapings under his fingernails.
他的指甲下可能有刮屑。
