我有两只钢笔，他们是红色的。

I have two pens. They are red.

youdao

我有两只钢笔，一支是新的，另一只是旧的。

I have two pens, one is new, the other is old.

youdao

我有两只钢笔，一支是新的，另一只是旧的。

I have two pens, one is new, the other is old.

youdao