n.等级制度( hierarchy的名词复数 )，统治集团，领导层，层次体系...

That's a trip of two hierarchies.那是两个领导层之间的互访.Their chief failing was that with such a limited command vector, the hierarchies became quite deep.它们最失败的地方是尽管命令数量有限, 但也必须深入到各级菜单.For this reason, many programmers prese...

hierarchies的音标：...