it s very good 什么意思啊

very good [简明英汉词典]
adv.很好

它很好。

表示说这句话的人的赞同

这要看用在什么样的语境中。如果某人提出一个建议，你很赞同，It means that's a good idea,I agree with you. But when someone asks you of something ,such as the condition of an event or an animal,this sentence means they are in good condition,you should not worry about it.Sometimes it means just do it in your own way.

它(某样东西)很好!