每天吃一个中等大小的鲜梨对营养吸收非常有益。
Eating gone medium fresh pear each day has a positive effect on nutrient intake.
在营养琼脂培养基平板上，它们所形成的噬菌斑形状各不相同，噬菌体HPA1所形成的噬菌斑大小中等且透明；
The morphologies of their plaques are different in nutrient agar medium. The plaque's size of HPA1 is medium and transparent.
目前水质处于中等富营养化程度，非点源是主要污染来源，土地利用则是影响非点源的主要因素。
The water quality of Miyun reservoir is at medium-eutrophication situation, which is mainly caused by the non-point source pollution (NPS) in the watershed.
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