nail down to

基本解釋

We shall have to nail him down to his promise.
我們將不得不迫使他履行自己的諾言。
dict.cn
She says she'll come, but I can't nail her down to a specific time.
她說要來，但我無法讓她敲定具躰什麼時候來。
One cable spelled out a deal that Turkey's leadership was trying to nail down to buy 16 Super Cobra helicopter gunships.
一份電報公佈了一項交易，土耳其領(lǐng)導(dǎo)人想對採購16架“超級眼鏡蛇”重型直陞機(jī)加以阻攔。
blog.sina.com.cn

Beijing is proving increasingly difficult to nail down on price thanks to its own eclectic sources of gas supply from Central Asia, Australia and its own domestic shale prospects.
FORBES: Doha's Double Hedge
The first things are often harder to nail down because they give shape to our dreams and desires.
FORBES: Success and Social Value: Do They Really Mix?
As yet, it is hard to nail down what all this amounts to.
ECONOMIST: A survey of Russia: A reconditioned model