好磨 meaning in Chinese

toshima
yoshima

Eg : we have to play this salesman just right . so we can get a good deal on the new car
我们要好好磨磨这个推销员，以便能以很好的价位买下这部车。
No wonder you can ' t cut the wood , that chisel you ' re using hasn ' t been sharpened properly for years
难怪你凿不动木头，你用的那把凿子已有数年没好好磨过了。
Polished by myself . it lasts so many days . a jian with curved surface is not easy to polish , and my hand has been cut
是自己磨的，磨了好多天，表面弧形的剑不大好磨，手都割了大口子。