the world that we live in 中的that 为什么可以省略

the world that we live in 中的that 为什么可以省略 It's hard to tell that the world we live in is either a real The world ______ is made up of matter.in that we live where 英语.It's hard to tell that the world we live in is either a r i am afraid that.中的that可以省略吗?为什么? The reason ...is that 中的that能否省略 为什么? insurance reminds us that we live in an unsafe world.that以后的 the world （that） we live in is made up of matter.这里面我知道用whic 空房间的这个英语咋解释?it's hard to tell that the world we live in is e the chances are (that)中的 the可以省略吗 That is the way that we live 英语翻译What does it mean to say that we live in a world of pers