Siblings are brothers and sisters. 同胞是指兄弟姐妹。

　　Siblings have the same parents. 同胞有相同的父母。

　　They usually grow up together in the same family. 他们通常在同一个家庭共同长大。

　　Also they spend a lot of time with each other when they are young. 小时候，他们有很多时间都在一起。

　　In the past, parents had many children, therefore people had many siblings. 过去，父母有很多孩子，因此人们会有很多兄弟姐妹。

　　What about these days? 那么现在呢？

　　Parents tend to have fewer children, therefore people have one or two siblings. 父母倾向于少生孩子，因此人们只有一两个兄弟姐妹。

　　How many siblings do you have? 你有多少个兄弟姐妹呢？