根据今年九月的一项研究显示，宇航员在呆着太空手套工作或者训练后，手指甲很容易掉落，特别是手比较大的那波人。

Astronauts with wider hands are more likely to have their fingernails fall off after working or training in space suit gloves, according to a study released in September.

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西莉亚换了个手提盒子，伸出一只手，希望与我握手——我注意到她的手指甲涂成血红色。 皮肤非常冰冷。

She shifted her box and poked out a hand for me to shake -- blood red nails, I

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较厚的手或手指广泛指甲床应该平方了目的。

Thicker hands or fingers with a wide nail bed should have squared off ends.

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