is less than is lesser than那个对?

is less than is lesser than那个对? sb is less than fortunate is more than 和is less than要 如何区别? A is 100-fold less than B. Today is less warmer than yesterday.改错 japanese is less important than English. (a) h is less than 4 He is no less diligent than sleep less than is good for them He is no less clever than you. is less than useless这么说对吗? 小于是be lesser than还是be less than数学用语