Colon cancer is one of the world's deadliest diseases, but it often has no symptoms in the early stages.

VOA: standard.2010.04.07

Well, the most important thing is, especially in their early stages,

嗯，最重要的是，特别是在早期，

想成为明星吗？ - SpeakingMax英语口语达人

Harvard is working with officials and medical experts in many parts of the world to identify the barriers and help countries eliminate them so women can be screened and diagnosed in the early stages when breast cancer can still be treated.

VOA: standard.2010.02.02