第一部分是一块戴在头上的大棉布方巾。

The first part is a large cotton square of cloth that is worn on the head.

我们需要先完成第一部分。

We need to finish the first part first.

第一部分是最重要的。

The first part is the most important.

请仔细阅读第一部分。

Please read the first part carefully.

第一部分包含了所有的基础知识。

The first part contains all the basics.

电影的第一部分非常精彩。

The first part of the movie was very exciting.

十二指肠是小肠的第一部分。

The duodenum is the first part of the small intestine.

第一部分介绍了项目的背景。

The first part introduces the background of the project.

这本书的第一部分非常有趣。

The first parte of the book is very interesting.

条形码的第一部分告诉你产品的生产国。

The first part of a barcode tells you the country where the product was made.