复数： fingernails

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Marked with a fingernail or a pencil .

都用指甲或是铅笔做了标记。

The strip of hardened skin at the base and sides of a fingernail or toenail .

角质层位于指甲或趾甲基部边缘的硬化带状皮肤。

Use your fingernail or a hard object with a blunt edge , like the corner of a credit card .

使用手指甲或有钝边的坚硬物体，比如信用卡的边角。

As I turned on my side I noticed pieces of fingernail , bits of skin and hair on the lift carpet .

当我转身侧卧时，注意到电梯的地毯上有零星的指甲、皮肤碎屑和头发。

This tiny frog the size of your fingernail might seem harmless but its skin is packed with a toxic alkaloid ptx 323a .

这种袖珍青蛙只有指甲盖大小，看上去人畜无害，但是它们的皮肤上布满了一种叫做ptx323a的生物碱。