one .the other...一个...另一个...
There are two bags on the shelf,one is red,the other is blue.（架子上有两只包,一只是红色的,另一只是蓝色的）
some...others...一些...其余的.
Boys are on the playground,some are playing basketball,the others are playing football.（男孩们都在操场上,一些正在打篮球,其余的正在踢足球）