nail down

• 动词短语，表示经过努力或讨论后最终确定、敲定或明确某事，也可指用钉子钉牢。

A phrasal verb used to indicate the act of securing, finalizing, or determining something precisely, often after effort or discussion.

不可数 · 及物 · 短语动词，可分

1. Secure or fastenformal

   To attach something firmly using nails.

   钉牢

   • He nailed down the loose floorboard.
   • The carpenter nailed down the roof tiles securely.
   • She nailed down the picture frame to the wall.

   同义词attachfastenfixhammerpinsecuretack

   反义词detachloosenremoveunfasten

2. Finalize or confirminformal

   To reach a definite decision or agreement about something.

   敲定

   • We need to nail down the details of the contract.
   • They finally nailed down a date for the wedding.
   • Let's nail down the schedule before the meeting ends.

   同义词clinchconfirmdecidedetermineestablishlock inpin downsecuresettle

3. Identify preciselyinformal

   To determine or identify something exactly.

   确定

   • The detective nailed down the suspect's alibi.
   • Scientists are trying to nail down the cause of the disease.
   • Can you nail down the source of the problem?

   同义词ascertainclarifydetermineestablishidentifypin downpinpoint

   反义词blurconfusemuddleobscure

基本动词nail