等级的的英文:hierarchical ;hierarchicalhierarchic参考例句:To determine the taxonomic classification of(an organism.确定(有机体的)类别等级rate lower; lower in value or esteem.降低事物的等级;让事物的价值或声望下降。 We ar http://www.24en.com/p/253622.html
英语作文:一切刚开始:本文由作文地带整理分享,希望各位网友喜欢。
"We are reading the first verse of the first chapter of a book whose pages are infinite…”
“我们正在读一本书的第一章第一行,这本书的页数是... http://www.joozone.com/gaokao/803478.html