慢速英语:Study: Regular Exercise Can Change Our DNA

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短语讲解：

1. Swedish scientists say they have proven that physical exercise changes not only our health but also our genetic material.

not only... but (also) 不仅…而且
例句：I can not only swim but also skate.
我不但会游泳，而且会滑冰。

2. Many of the genes that changed were linked to energy, insulin and muscle inflammation or pain.

link to 与…连接， 联系
例句：The thermostat is connected by a link to the carburetor. 
恒温控制器是由一根连杆与汽化器相连的。 

3. Scientists say this shows that regular exercise affects our genes and can lead to better health.

lead to 导致
例句：Smoking can lead to lung cancer. 
抽烟可能导致肺癌。