B2 a small, thin piece of metal with one pointed end and one flat end that you hit into something with a hammer, especially in order to fasten or join it to something else钉,钉子
More examples
I got a flat tyre after driving over a nail.
Can you hold this nail in position while I hammer it into the door?
I ripped my shirt on a nail.
I've got a run in my tights from the nail on my chair.
She scrounged around in the tool box for a tack or nail to hang the notice up with.
B2 a thin, hard area that covers the upper side of the end of each finger and each toe指甲;趾甲
More examples
You're not to bite your nails like that.
She painted her nails a bright red.
She filed her nails as she watched TV.
She sat in the dentist's waiting room, nervously chewing at her nails.
I wish my nail polish wouldn't keep chipping.
[ T + adv/prep ] to fasten something with nails用钉子钉,将…钉牢
[ T ] slang to catch someone, especially when they are doing something wrong, or to make it clear that they are guilty(尤指当场)抓获,逮住;证明…有罪,揭发
noun¹
noun²
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