roll back片语动词KK [rol bæk] /ɹoʊl bæk/发音片语动词1撤销、废除、取消可拆开The new government promised to roll back these environmental regulations.新政府承诺撤销这些环保法规。2降低、下调、回落可拆开The supermarket rolled back prices on hundreds of everyday items.这家超市把数百种日常商品的价格调低了。3卷起、翻起、掀开可拆开He rolled back his sleeves and started washing the dishes.他卷起袖子,开始洗碗。4恢复、还原、回溯可拆开We had to roll back the update after users reported crashes.用户回报程式崩溃后,我们只好把更新还原。5倒退、倒转、回到从前Seeing the old playground rolled back the years for her.看到那个旧游乐场,她仿佛回到了从前。6击退、逼退The troops slowly rolled back the enemy along the river.部队沿河一步步击退敌军。用这个字练口说→