The scientists found 794 such species of mammals, birds, reptiles, amphibians, and conifers, three times the number recorded as having gone extinct since 1500.是什么意思_The scientists found 794 such species of mammals, birds, reptiles, amphibians, and conifers, three times the number recorded as having gone extinct since 1500.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句