They can be used to crate a common interface among a group of classes.

它们可以被用来创造一组类之间的通用接口。

youdao

This scripting language supports XML data through a group of classes that adhere to the ECMAScript for XML (E4X) specification.

该脚本语言通过一组遵循ecmascript for XML (E4X)规范的类支持XML数据。

youdao

Sequence diagrams can be used to describe the USES of a class or interacting group of classes, thus describing the protocols required for interaction.

序列图可用于描述类或一组相互作用的类的使用，因而描述了交互所需的协议。

youdao

"In Austria,it's more like you have all classes together with the same group of people.

VOA: special.2009.11.05

For example, she says a group of students who met in her classes now get together two times a week to talk and to bead.

VOA: special.2009.05.18

Tory policy was to back setting in key subjects but to allow schools freedom to stream pupils in a group of other classes such as geography, a spokesman said.

BBC: NEWS | UK | UK Politics | Brown plans 'world class' schools

Gate 14 is small-town America, a mix, a group of people of all classes and races and ages, brought together and living in close proximity until the plane is called.

NPR: 'This American Moment' As Peggy Noonan Sees It

In some of the most popular group classes, movements have nicknames plucked from the intersection of innuendo and Urban Dictionary.

FORBES: Bright Lights, Big Fitness: The Business Of Keeping Broadway In Shape