need colon
需要结肠
以上为机器翻译结果，长、整句建议使用 人工翻译 。
To understand this you need to know that our body has a natural cleansing system that is done by the colon.
要理解这一点你必须知道，我们的身体有一个自然的清洗系统，是由冒号。
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Colon cancer screening saves lives, but more need to do it.
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