It's common knowledge that smoking and cancer are closely linked.

众所周知，吸烟和癌症是密切相关的。

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Knowledge about the causes of cancer, and interventions to prevent and manage the disease is extensive.

已经掌握了关于癌症病因及预防和管理癌症的干预措施的大量知识。

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“Knowledge is power, ” Ms. Haberland said. “I think knowing the reality of the risks of my cancer makes me more comfortable undergoing my treatment.”

“知识就是力量”，Haberland女士说，“我认为我知晓了自己癌症的各种风险现实以后，使得我在经历治疗的过程中更加自如”。

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You wanted to know your place in the universe, but you don't even have that kind of knowledge either, because you think you're writing novels, finding the cure for cancer, climbing Mount Everest.

你想知道自己在宇宙里的位置，但是你连那种知识都没有，因为你以为自己是在写小说，在寻找治疗癌症的办法，在攀登珠穆朗玛峰。

耶鲁公开课 - 死亡课程节选

First, while we know a good deal about breast cancer, knowledge of established risk factors provides few opportunities for reducing risk.

FORBES: After 40 Years Of Research, What Do We Know About Preventing Breast Cancer?

One of the most damning verdicts on the late Hugo Chavez's leadership of Venezuela came from a doctor who made a name for himself by claiming to have inside knowledge of the cancer that eventually killed the president.

BBC: Hugo Chavez leaves Venezuela in economic muddle

The findings don't diminish enthusiasm for the idea that genetic knowledge about tumors can transform cancer care, the researchers said.

WSJ: 'Personalized Medicine' Hits a Bump