英语语法分析

Accessorize a mobile device (Subheading that starts with a verb).

Accessorize a mobile device(副标题以动词开头)。

Header Designer exposes Heading and SubHeading properties to the user.

头设计公开标题与副标题属性给用户。

For this purpose, constituent monomer units of polymers falling in the same subheading shall betaken together.

为此，归入同一子目的聚合物单体单元应作为一种单体单元对待。