请教一个后置形容词短语的问题In order for the structure to achieve the size
请教一个后置形容词短语的问题
In order for the structure to achieve the size and strength necessary to meet its purpose,
necessary to meet its purpose,应该是后置形容词短语吧,修饰size and strength
应该不是定语从句把,necessary 是形容词,