1.This was attributed to the positive physiological effects on the body of increased recreation and social activity.
attribute to把某事归因于某人[某事]
It is preposterous to attribute to mere external conditions.
仅仅以外部环境解释一切是不合理的
。2.The team found that those with the strongest network of friends and confidants were less likely to die by the end of the ten-year period.
by the end of到…为止
By the end of the evening they were all absolutely paralytic.
晚上结束时,他们全都酩酊大醉
。3.The message is to keep in touch if you want to live longer.
keep in touch保持联络
We're a tight group, so we do keep in touch.
我们关系很铁,所以的确保持着联系
。