nail down

To discover or establish conclusively

明確地決定或建立

nailed down the story by checking all the facts.

通過(guò)查核所有的事實(shí)而下的結(jié)論

To win

贏得

nailed down another victory in the golf tournament.

贏得了另一項(xiàng)高爾夫球大賽

fight tooth and nail

見(jiàn) tooth

hard as nails

(of a person) very tough; completely callous or unfeeling

（人）強(qiáng)硬的；鐵石心腸的，冷酷無(wú)情的

nail one's colours to the mast

a nail in the coffin

an action or event regarded as likely to have a detrimental or destructive effect on a situation, enterprise, or person

催命符，致命一擊

this was going to put the final nail in the coffin of his career.

這對(duì)他的事業(yè)來(lái)說(shuō)會(huì)是個(gè)致命打擊。

on the nail (北美亦作

(of payment) without delay

（付款）當(dāng)場(chǎng)的，立即的

nail someone down

elicit a firm promise or commitment from someone

使承諾

I can't nail her down to a specific date.

我無(wú)法讓她說(shuō)定一個(gè)日子。

nail something down

fasten something securely with nails

釘牢，釘住

identify something precisely

弄清，確定

something seems unexpected—I can't nail it down, but it makes me uneasy.

好像出了點(diǎn) 事——我弄不清楚是什么，可它讓我感到不安。

secure something, especially an agreement

敲定；確保（某事物，尤指協(xié)議）

nail something up

fasten a door or window with nails so that it cannot be opened

把（門、窗等）釘死