常見(jiàn)例句雙語(yǔ)例句These bird fossils have great significance for both the study of the climatic and eco-environmental change at the Ashan site and the avian geographic distribution, mi gra tion and evolution.這些鳥(niǎo)類化石對(duì)研究遺址的生態(tài)環(huán)境、氣候變化以及鳥(niǎo)類地理分佈、遷徙和縯化等都有重要意義。 返回 eco-geographic distribution