Now you'll create an XML document in the activity class CreatingXML, which extends the Activity class.

现在，您将在活动类 CreatingXML 中创建一份 XML 文档，该类扩展了 Activity 类。

youdao

The math comprehensive practice activity class is different from common math classroom teaching. It is comprehensive, practical, open, and independent.

数学综合实践活动课有别于一般数学课堂教学，它具有综合性、实践性、开放性、自主性等特点。

youdao

I have been teaching physical education or physical activity class in college for a few years.

我在大学已经教了几年体育课和体育活动班。

youdao

The party opposes his plan to cut taxes for middle class Americans and use of government spending to increase economic activity.

VOA: special.2009.05.02

Poetry is not, that is to say, a leisure class activity.

这就是说，诗歌不是小资阶层的活动。

耶鲁公开课 - 现代诗歌课程节选

Peterson says an early childhood education class got her thinking about ways to incorporate more activity into their school day.

VOA: standard.2010.06.25

The idea is, the casual participation in sports in class sparks an interest that inspires a child to try an activity outside of class.

FORBES: Sporting Goods Stores Profit From Our Breeding

The cost of reviving the 2% tax on wages for the middle class is expected to reduce economic activity by at least 0.5%.

FORBES: Bernanke Wants $85 Billion Sequester Downsized

My guess is that the most profitable (and prolific) class action firms regularly engage in activity that may limit their potential growth and preclude mergers with other firms.

FORBES: Are Class Action Law Firms Too Corrupt to Go Global?