Before,people with special needs were often prevented from physical activity out of concern that they would hurt themselves or be unable to compete.

VOA: special.2009.08.23

And you can see this expanding rings of activity of stimulating, Cause a pattern of activities that move forward from the back of the brain to the front of the brain, in a very regular pattern which we call a visual field map.

眼睛在前面，指向这个红点，大家看到，刺激活动不断扩大的环路,引起一个活动的模式，从大脑的后不向前部移动，这一模式十分规律，我们可以称其为视觉分布图。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

The rabbis are accused of using their congregations' charitable organizations to launder about from alleged illicit activity through their charities' bank accounts.

VOA: standard.2009.07.24

"We have 33 company members. We're from different schools but we just meet on Saturdays from 4:30 to 6:30, it's an after school activity,"

VOA: standard.2009.12.04

Speaking on Palestinian radio, Chief Palestinian negotiator Saeb Erekat said there will be no compromises from their side on their demand for Israel to freeze settlement activity.

VOA: standard.2009.09.13

So working with the government of Morocco,we are hoping to really help to see blossom a lot more economic activity at the lower levels that will then from the bottom-up build prosperity,"

VOA: standard.2009.11.03

"I think the most difficult thing will be to be separated from the people that I am used to, and leaving behind some of the habits - all our activity will be directed towards a certain goal."

VOA: standard.2010.06.02

"Black women, who are more likely to be uninsured, are living in communities where there is limited access to the healthy foods and exercise and activity that is necessary from childhood on to reduce the likelihood of obesity and chronic illnesses."

VOA: standard.2010.06.23