短語(yǔ)詞組短語(yǔ)a hard and fast rule 劃一不二的規(guī)定hard -and-fast rule 硬性規(guī)定;嚴(yán)格的規(guī)則;固定規(guī)則a hard -and-fast rule 不可觸犯的規(guī)則 返回 hard and fast rule