分类：教育/科学-外语学习
问题：帮忙看一段话，谢谢啊Speakingtwolanguagesca 
Saking two languages can actually help offset some effects of aging on the brain, a new study has found. Researchers tested how long it took participants to switch from one cognitive task to another, something that's known to take longer for older adults, said lead researcher,Saking two languages can actually help offset some effects of aging on the brain, a new study has found. Researchers tested how long it took participants to switch from one cognitive task to another, something that's known to take longer for older adults, said lead researcher, Brian Gold, a neuroscientist at the University of Kentucky。
回答：Saking two languages can actually help offset some effects of aging on the brain, a new study has found.试译：一项新的研究发现，说两种语言实际上能帮助抵消衰老对大脑的影响。分析：此处难点可能在some effects of aging on the brain。事实上，on部分在逻辑上紧跟在effects之后，意为“对大脑的影响”。Researchers tested how long it took participants to switch from one cognitive task to another, something that’s known to take longer for older adults, said lead researcher, Brian Gold, a neuroscientist at the University of Kentucky. 试译：首席研究者、肯塔基大学神经学家布莱恩·古尔德说，研究者测试了参与者从一项认知活动转换到另一项时所用的时间，此方面据信老年人用的时间更长。分析：1、something that’s known to take longer for older adults是how long it took participants to switch from one cognitive task to another的同位成分，即是说：研究者测试了据信老年人所用时间更长的某事。2、know貌似简单，但未必好把握，它在此句中的含义是：to think that sb/sth is a particular type of person or thing or has particular characteristics（认为），此处用的是know sb/sth to be/do sth结构。