There is something about water that makes it a good metaphor for life.
2018年12月六级真题(第一套)听力 Section B
柯林斯高阶英汉双解学习词典释义
N-VAR
隐喻;暗喻;比喻的说法
A metaphor is an imaginative way of describing something by referring to something else which is the same in a particular way. For example, if you want to say that someone is very shy and frightened of things, you might say that they are a mouse.