There are two red pencils, three black ball pens and a blue pen there.

那儿有一个蓝色钢笔，两个红色铅笔和三根黑色圆珠笔。

youdao

I have two pencils. One is red, the other is yellow.

我有两只铅笔，一只是红色的，一只是黄色的。

youdao

I have two pencils. The red one is long. The green one is short.

我有两支铅笔，红色的那只长，绿色的那只短。

youdao