And schools will often recognize a new club or activity if enough students are interested.

VOA: special.2009.08.07

There are 100 of these molecules, when a receptor gets activated a kinase activity gets activated, the kinase acts on the protein, the protein gets switched on, something new starts to happen inside the cell.

有一百个这样的分子,当受体被激活,激酶被激活后,激酶作用于蛋白,使蛋白活化,细胞中就会发生一些新变化

耶鲁公开课 - 生物医学工程探索课程节选

He says his team showed the effects of a new process to understand what happens in the Pacific's warm waters where there is a maximum of solar activity.

VOA: special.2009.09.29

Flying was a new and exciting activity in the early nineteen twenties.

VOA: special.2010.05.26

It is hoped that the new structure will end months of civil unrest that killed more than 100 people and paralyzed economic activity.

VOA: standard.2009.03.20

Turning the Page for us refers to the HIV prevention research world really entering a new period in its activity, That new period comes 30 years into the HIV/AIDS epidemic.

VOA: standard.2010.07.15

Last week saw positive U.S.economic news, with increases in home sales and housing prices, a jump in manufacturing activity, a drop in new jobless claims, and a new growth figure showing the economy shrinking far less than had been anticipated.

VOA: standard.2009.08.02

She says that a number of her counterparts were not aware that the Israeli offer included an end to all new settlement activity in the West Bank, an end to the expropriation of Palestinian land,and an end to any new construction permits.

VOA: standard.2009.11.02