formation和pattern的区别
formation: n.
组成;形成;组成物;形成物;编队;队形
例句:The main thrust of the research will be the study of the early Universe and galaxy formation
patternn.
模式;方式;范例;典范;榜样;样板;图案;花样;式样
v.
构成图案(或花样);使形成,促成(某行为模式
例句:The pattern is essentially the same in all cases.