我想买一个便宜的。

I want to buy a cheap one.

youdao

在家自制一个三明治比在外面买一个便宜得多，而且只需要几分钟。

It costs much less to make a sandwich at home than to buy one out, and it only takes a few minutes.

youdao

要是你真的想带上电脑，那就买一个便宜点的笔记本来记录下旅途中的心得吧。

If you really want to bring a computer, buy a cheap notebook expressly for the purpose of travel.

youdao