Exercise will not only lower blood pressure but possibly protect against heart attacks.

运动不仅会降低血压，而且能防止心脏病发作。

《柯林斯英汉双解大词典》

The bags have tough exterior materials to protect against knocks, rain, and dust.

这些袋子结实的外层材料有防撞、防雨、防尘的作用。

《柯林斯英汉双解大词典》

Running, for example, may help to protect against heart disease and other health problems.

例如，跑步可能有助于预防心脏病和其他健康问题。

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This has led to greater use of monovalent vaccines to protect against either type one or type three polio.

VOA: special.2010.01.18

But because of the similarity of the viruses, the immune response that people developed would also protect them against natural infections with variola.

因为这两种病毒很相像,人体的免疫应答也能保护自己,免受天花的感染

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And there was a feeling that this could protect you against the disease.

这会使你觉得受到了保护不会得这种病

耶鲁公开课 - 生物医学工程探索课程节选

The U.S. Constitution was designed to protect against such an outcome.

FORBES: 165 Million Americans Are Dependents of the State: Is Tyranny Next?

Bloomberg reports that the cost to protect U.S. bank debt against losses surged with contracts on the debt of JPM adding 5.7 basis points to 133.2.

FORBES: Financials Fall, JPMorgan Shares Hit 1-Year Low On Greece Default Worries

Many of them are now looking to the U.S. to protect them, or against al-Qaida who they no longer see is serving their interests.

NPR: Two Neighborhoods Illustrate Baghdad's Divide