collacin

例句：

1. 1. He was diagnosed with colon cancer.
   他被诊断出患有结肠癌。
2. 2. The colon isthe last part of the large intestine.
   结肠是大肠的最后部分。
3. 3. Coloncancer is a type of cancer that startsin the colon.
   结肠癌是一种起源于结肠的癌症类型。