| 单词 | food pyramid |
| 释义 | food pyramid in American English a pyramid-shaped representation of the food chain with many food-producing organisms, esp. green plants, at the base and decreasing numbers of food-consuming organisms, esp. animals, at each higher level food pyramid in American Englishnoun Ecology (of a food chain) successive levels of predation in a food chain represented schematically as a pyramid because upper levels normally consist of decreasing numbers of larger predators Word origin [1945–50]This word is first recorded in the period 1945–50. Other words that entered Englishat around the same time include: ergative, fail-safe, shootout, spin-off, synchronized swimmingExamples of 'food pyramid' in a sentence |
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