動(dòng)詞 nail down:

1. succeed in obtaining a position
   同義詞：nail, peg
2. define clearly
   同義詞：pin down, peg down, narrow down, narrow, specify
3. make final; put the last touches on; put into final form
   同義詞：finalize, finalise, settle

1. He had a hard time selling his car, but he finally nailed down the sale when he got his friend John to give him$500.
   他原先賣(mài)不掉他的汽車(chē)，但他的朋友約翰給了他500美元，終于把這宗買(mǎi)賣(mài)定了下來(lái)。
2. He told us that he had lost the money but we nailed down that he had lied by proving he had spent it.
   他對(duì)我們說(shuō)他丟了錢(qián)，但是我們證實(shí)是他把錢(qián)花了，從而確定他是說(shuō)謊。
3. It take the negotiator ten hours to nail down a deal.
   參加協(xié)商的人花了十個(gè)小時(shí)才敲定一樁生意。