Regular exercise strengthens the heart, thereby reducing the risk of heart attack.

经常锻炼可以增强心脏机能，从而减少心脏病发作的危险。

《牛津词典》

Reducing the risk of mosquito transmission.

降低蚊子传播的风险。

youdao

Reducing the risk of horse-to-human transmission.

减少由马传播给人类的风险。

youdao

"We estimate in WHO that over thirty million lives can be saved in the next ten years by simple measures -- reducing the level of salt by fifteen to twenty percent, reducing the amount of tobacco, and increasing the number of people who are at risk of a heart attack and stroke to be on simple preventive treatment."

VOA: special.2011.05.11

It wants parents to reduce the risk of choking by first cutting hot dogs in half lengthwise, cutting grapes into quarters and reducing the size of other foods that can get stuck in children's throats.

VOA: standard.2010.02.23

This should rein in the more careless lenders, reducing the risk of a credit bubble.

ECONOMIST: Russia's economy

They found that seat belts provide much more effective protection, reducing the risk of death by 65%.

BBC: Speed camera plan 'may cause deaths'

The AMT is now indexed to inflation, reducing the risk of suddenly higher taxes on those folks.

FORBES: Five Post 'Fiscal Cliff' Facts to Consider