nail down

基本解釋

A few exercises helped me nail down my ultimate satisfaction-generating personal business model.
一些練習(xí)幫助我最終敲定了這個(gè)爲(wèi)了創(chuàng)造滿足感的個(gè)人商業(yè)模式。
Starting with the frame list keeps the storyboard organized and helps you nail down the step-by-step outline before delving into the details of each frame or sketch.
以框架列表開始可以使故事板有組織，而且還可以幫助你鑽研每一框架或者示意圖細(xì)節(jié)之前確定一步步的綱要。
Moreover, new services have emergedthat will help you—for a sometimes-substantial fee—nail down the username ofyour choice, assuming it isn’t already taken, at dozens or even hundreds ofsites.
另一方麪，十幾個(gè)甚至上百個(gè)網(wǎng)站都推出了新的服務(wù)，旨在幫用戶綁定他們所選擇的，假定還未被注冊(cè)的用戶名，同時(shí)收取一定的費(fèi)用。

The 2007 World Series between the Boston Red Sox and Colorado Rockies should lay to rest one of the great myths of modern baseball: that a dominant "closer"--a high-priced pitching ace who enters a game in the final inning to nail down a victory--is a must-have for success.
FORBES: Magazine Article
By that I mean first nail down the core 4-5 keywords you know are critical and then branch out for more related terms or phrases.
FORBES: Do You Know Your 10 Most Important Keywords?
Most will work with you--and you want to nail this down before you burn through your savings.
FORBES: Deciphering A Credit Report

If you nail down something unknown or uncertain, you find out exactly what it is.
If you nail down an agreement, you manage to reach a firm agreement with a definite result.