回答数
6
浏览数
317
逍遥黑猫
A**** theory is an important part of **** system.
Mary瑶瑶
isanimportantcomponentof
sisley0522
一个主要的部分的英文：an integral part of
红月光薇儿
It is made of 或者It is an inprotant part of
卉峰呢喃
themostimportantpart
你自己觉得
the most important part
优质英语培训问答知识库
