The Secretary of State and his Russian counterpart met to try to nail down the elusive accord.

美国国务卿与俄罗斯外交部长会晤，试图确定这项表述模糊的协议。

All the parties seem anxious to nail down a ceasefire.

各方面似乎都渴望将停火之事敲定。

It would be useful if you could nail down the source of this tension.

如果你能弄清这种紧张情绪的根源，会是有用的。

For I am till the last nail down.

换了我就是直到最后一个钉子钉下来。

You should nail down the agreement in October.

你应在十月份就把协定确定下来。