Chronic nonspecific ulcerative colitis is a disease with exacerbations and remissions.

溃疡性结肠炎这种病可以恶化亦可缓解。

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Chronic nonspecific ulcerative colitis is a disease with exacerbations and remissions.

溃疡性结肠炎这种病可以恶化亦可缓解。

youdao