You can refer to a level on a scale of measurement or achievement as a notch .
例句
Average earnings in the economy moved up another notch in August...8月份这个国家的平均收入又上了一个台阶。In this country the good players are pulled down a notch or two...在这个国家，优秀选手的水平降了一两个档次。
VERB
(尤指体育比赛中)赢得，获得
If you notch a success, especially in a sporting contest, you achieve it.
例句
Steve Bull notched his 200th goal for Wolves as they beat Leicester 3-0...史蒂夫·布尔为狼队攻入了他的第200粒进球，他们以3比0击败了莱斯特队。The President is keen to notch a political triumph that would foster freer world trade and faster economic growth.总统渴望获得政治胜利，以促使世界贸易更为自由，经济发展更为迅速。
N-COUNT
V形槽口;圆形切口
A notch is a small V-shaped or circular cut in the surface or edge of something.
例句
They cut notches in the handle of their pistol for each man they shot.他们每杀一个人就在枪托上刻下一个V形记号。
英英词典释义
Adjective
1. notched like a saw with teeth pointing toward the apex
2. having an irregularly notched or toothed margin as though gnawed