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1.She concludes that people with strong grips may have benefited from a happy childhood that included a healthy diet and plenty of exercise.
benefit from通过…获益；受益
Ted might benefit from hearing his own voice recorded and played back.
听自己声音的录音回放对特德可能会有帮助。
plenty of很多，大量的
There were plenty of servants to wait on her.
有很多仆人服侍她。
2.Those who struggled to get up from their armchairs were twice as likely to die earlier than those who sprang out of their chairs.
spring out of从…猛跳了起来
He sprang to his feet, grabbing his keys off the coffee table.
他突然跳了起来，从茶几上一把抓起自己的钥匙。
3.Research that helps people to enjoy a long and healthy life is ever more important to help cater for an ageing population.
cater for迎合
They maintain a database of hotels that cater for businesswomen.
他们维护着一个服务于商界女性的酒店资料库。
