The active activity states are: running, waiting, ready, claimed, and stopped.

处于活动状态的活动状态包括：正在运行、正在等待、就绪、已请求和已停止。

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Activity states represent the performance of an activity or step within the workflow.

活动状态表现了工作流程中的活动或者步骤的执行情况。

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In fact, various emotional states give rise to certain patterns of electrical activity in the facial muscles and in the brain.

事实上，不同的情绪状态会在面部肌肉和大脑中产生特定的脑电活动模式。

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The Census Bureau says swimming was the third most popular sports activity in the United States in two thousand seven.

VOA: special.2010.06.08

We attended this year's United States Air Guitar Championships in Washington,D.C.to learn more about this unusual activity.

VOA: special.2009.08.14

"I don't want to spend more than twenty dollars for a backpack." Consumer spending is seventy percent of the economic activity in the United States.

VOA: special.2009.08.21

The most recent CDC report, from early February, showed widespread activity in 16 states, up from five the previous week. (That same week Google Flu showed high activity in 18 states).

CNN: Flu season picking up speed, tracking indicates

ATLANTA, Georgia (CNN) -- Only 32 states are currently reporting widespread H1N1 flu activity in the United States, down from 48 states three weeks ago, federal health officials said Monday.

CNN: CDC: Fewer states seeing widespread flu activity

The National Weather Service has issued warnings of high chances of wildfire activity in nine states, including Colorado.

CNN: Colorado fire tops 55,000 acres, could spread with hot, windy weather