这身衣服你需要用三米布料。

You need to allow three metres of fabric for the dress.

《牛津词典》

中国南海的鲸落深度约为三米。

The whale fall in the South China Sea is about three meters long.

youdao

它大约有三米长，开发这个模型花了大约四年的时间。

It's about three meters long, and it took about four years to develop the model.

youdao

Then I ask you, "What is two meters and what is three meters?"

然后我问你,"两米有多长,三米有多长"

耶鲁公开课 - 基础物理课程节选