短語(yǔ)詞組短語(yǔ)ecological l pyramid 食物鏈金字塔;生態(tài)塔inverted ecological pyramid 倒生態(tài)金字塔trophic levels & ecological pyramid 營(yíng)養(yǎng)級(jí)和生態(tài)金字塔 返回 ecological pyramid