nail down什么意思解释

nail down的音标：nail down的英式发音音标为：[neil daun]nail down的美式发音音标为：[nel daʊn]...

Will you nail down that loose board in the floor?请把那块松动的地板钉牢好 吗 ?It would be useful if you could nail down the source of this tension.如果你能弄清这种紧张的根源，将会大有益处。It took the negotiators ten hours to nail down a deal.参加协商的人花了十个小...