求翻译：鸸鹋，又名澳洲鸵鸟，它能堂而皇之地走上国徽，得益于它是澳大利亚最大的鸟,是澳大利亚的象征性动物之一，鸸鹋是世界上最大的陆地鸟之一，也是世界上最古老的鸟种之一。是什么意思？

EMU, also known as EMU, it can open up the national emblem, benefited from it is Australia's largest bird, is the Australia one of the symbolic animal, EMU is one of the world's largest land birds, is one of the most ancient species of bird in the world.