［词语］to come down to brass tacks

to get down to brass tacks

［含义］说话单刀直入；谈实际问题；言归正传

［趣释］【物事喻指】早年美国有一种平头铜钉（brass tacks）常用来钉柜台或椅子。人们在柜台按尺寸钉（试读）...