往一个咖啡杯中装满干麦片，就可获得干麦片的食用份量。
Fill a coffee mug with dry cereal to get an indication of the size of a portion of dry cereal.
每一个营养标的列表上都有成分的食用份量和每包的份量。
Each Nutrition Facts label lists its item's serving size and the number of servings per package.
如果你不检查食用份量，你可能是在吃两倍或者甚至三倍你所期望的卡路里。
If you don't check the serving size, you could be eating double or even triple the calories you expected.
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