自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
N-COUNT 钉子 A nail is a thin piece of metal with one pointed end and one flat end. You hit the flat end with a hammer in order to push the nail into something such as a wall.
A mirror hung on a nail above the washstand...
He hammered the nail into the branch.
VERB (用钉子)钉住，钉牢 If you nail something somewhere, you fix it there using one or more nails.
Frank put the first plank down and nailed it in place...
They nail shut the front door...
N-COUNT 指甲;趾甲 Your nails are the thin hard parts that grow at the ends of your fingers and toes.
Keep your nails short and your hands clean.
VERB 抓住;逮住;证明…有罪 To nail someone means to catch them and prove that they have been breaking the law.
The prosecution still managed to nail him for robberies at the homes of leading industrialists.
PHRASE 冷酷无情的;铁石心肠的;强硬好斗的 If you say that someone is as hard as nails, you mean that they are extremely tough and aggressive, either physically or in their attitude towards other people or other situations.
He's a shrewd businessman and hard as nails...
He simply looked mean and hard as nails.
PHRASE 正中要害;说得中肯 If you say that someone has hit the nail on the head, you think they are exactly right about something.
'I think it would civilize people a bit more if they had decent conditions.' — 'I think you've hit the nail on the head.'