nail down片語動詞KK [nel daʊn] /neɪl daʊn/發音片語動詞1敲定、確定、談成可拆開We finally nailed down a date for the wedding.我們終於把婚禮的日期敲定了。2弄清、查明、確認可拆開Doctors still can't nail down the cause of her illness.醫生至今還查不出她患病的原因。3準確說出、明確描述可拆開There's something odd about the painting, but I can't nail it down.這幅畫有點怪,但我說不出究竟怪在哪裡。4使明確表態、讓人承諾可拆開I tried to nail him down to a specific price.我想讓他給出一個確切的價錢。5釘牢、釘住可拆開He nailed down the loose floorboards in the hallway.他把走廊上鬆動的地板釘牢了。