I've had a better time than they had.
我比他们有好时光。
This had a better effect.
这一骂倒有了好效果。
It would be better if we had a better knowledge of the machine.
要是我们对这台机器了解多一点的话，那就更好了。
Patients with smaller value of PI had a better prognosis.
预后指数值小的患者预后好。
But now I had a better idea.
现在我有个更好的主意。