And things have changed over the last generation or two.

VOA: standard.2010.07.14

If you have two different ligands stimulating two different receptors, and one causes activation of this enzyme and generation of cyclic AMP, cyclic AMP levels will start to rise.

如果有两种不同的配体,刺激不同的受体,一种能够活化酶,并促进生成cAMP,cAMP的水平就会升高

耶鲁公开课 - 生物医学工程探索课程节选

"It has collapsed because of the conscious work of new generation of opposition inside which worked for two decades on building up an alternative system of information, knowing that's the most important,".

VOA: standard.2009.11.03

"Two-point-four billion dollars in highly competitive grants to develop the next generation of fuel-efficient cars and trucks, powered by the next generation of battery technologies all made right here in the U.S.of A,"

VOA: standard.2009.08.05