n.(V字形的)槽口,刻痕,<美>峡谷,等级
vt.砍,切,在…上作刻痕、开槽口,作刻痕计算,得分
A sesame stalk puts forth blossoms notch by notch, higher and higher.
芝麻开花节节高.
He is keen to notch up yet another success.
他渴望能再次成功.
The quality of the food here has dropped a notch recently.
这里的饭菜质量最近下降了一级。