A presentation by "the doctor" would drive local sales of sweet potato and "anti-cancer" vegetables up a few notches.
他到某个城市上一堂课，就能让当地的红薯卖疯了，“防癌蔬菜”价格狂飙。
2
Things have been kicked up a few notches, and some negotiators don't play fair.This book will tell you what's going on, and how to handle it.
事情改观了，有些谈判人员并不会公平就事论事，而本书将会为你解析情况，并给你一些应对的方法。
3
One line of analysis is that the younger Kim has to put a few notches in his belt by ordering some attacks on the South, the way his father once built up a little credibility.