A complete list of all the species on the planet is, for many biologists and conservationists, the natural history equivalent of the Holy Grail.是什么意思_A complete list of all the species on the planet is, for many biologists and conservationists, the natural history equivalent of the Holy Grail.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句