求翻译：3、腹痛较重或大便潜血阳性者进食半流食、消化道有明显出血者应禁食，注意观察生命体征及大便颜色，及时送检。是什么意思？

3, abdominal pain, heavy or fecal occult blood positive eating semi-liquid food, the digestive tract have significant bleeding should be fasting, observe vital signs and stool color, and timely submission.

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3rd, the abdominal pain is heavy or the bowel movement dives the blood masculine gender feed partly to flow the food, the digestive tract has the obvious bleeder to be supposed to fast, the attention observation life symptom and the bowel movement color, deliver promptly examine.

3, abdominal pain is severe or fecal occult blood positive semi-liquid diet, eating significant hemorrhage of digestive tract should be fasting, observe the vital signs and stool color, submitted in a timely manner.