确定每一个营养阶层原生质总量的第二个好办法是称重。
The next best way to quantify the amount of protoplasm in each trophic level is to weigh it.
天敌搜寻食物的行为依赖于来自不同营养阶层上的信息，化学信息起重要作用。
Hunting food behavior of natural enemy depends on information from various trophic levels, especially chemical information.
它对于那些被人忽视的阶层和部族而言收效甚微，不会提升妇女的社会地位，也不会鼓励母乳喂养和低龄营养摄入。
It would do little or nothing for neglected castes and tribes. It would not raise the status of women, or encourage breastfeeding and early nutrition.
在一些社会阶层里，女孩更有可能出现营养不良并很少接受教育或者将出生的权力交给医生。
In some communities, daughters are more likely to be malnourished and less likely to be educated and taken to the doctor.
世界头号食品公司将宝压在健康营养产品的新兴阶层以促进公司壮大。然而，危机四伏。
The world's biggest food company is betting on an emerging class of health and nutrition products to spur its growth. But risks abound.
Butrisks abound世界头号食品公司将宝压在健康营养产品的新兴阶层以促进公司壮大。
The world's biggest food company is betting on an emerging class of health and nutrition products to spur its growth.
Butrisks abound世界头号食品公司将宝压在健康营养产品的新兴阶层以促进公司壮大。
The world's biggest food company is betting on an emerging class of health and nutrition products to spur its growth.
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