could not very well含义与用法

could not very well本意是不好，其实是could not do sth. very well 的衍生词组，具体理解看句意
用法主要有两种，一种直接按此顺序用，另一种可将not提到well后面，could very well也有两种用法，直接用和very well could，但could very well意思上的理解更多样化，可以有很可能，很大程度上的意思，这里暂不举例。
e.g.I couldn't very well say anything, but I squeezed his hand and smiled.
我不好再说什么，只是抓紧他的手笑笑。
In fact, Google could very well not need to buy Facebook because it’s already a bigger social network than Facebook.
事实上，谷歌没有太大必要吞并脸谱，因为它已成为比脸谱更大的一个社交网络。