a good bit是什么意思？

很,
很多.
I care a good bit. 我很在意.
There is good bit amount of water on the floor. 地板上有不少水.

好的方面。
The good bit of smoking is that it can relax you a lot.

英文意思是A GOOD BIT

很多；不少

a good bit
很多；不少

With this job I earn a good bit of money, why should I change it.
这个工作让我赚了很多钱，干吗要换呢？