一课译词:板上钉钉发布于: 经典2020-06-13标签: 板上钉钉译词forwardslate Photo by asim alnamat from Pexels “板上钉钉”,汉语成语,本义指在石板上钉上铁钉(nail the slate with nails),比喻事情已经决定,不能改