按部就班

按的英语翻译：

according to; control; leave aside; press; push; refer to
【电】 press

部的英语翻译：

ministry; office; part
【医】 board; department; loci; locus; pars; part; Partes; piece; portio
portiones; regio; region
【经】 ministry

就的英语翻译：

accomplish; already; as much as; at once; come near; move towards; only
undertake; with regard to

班的英语翻译：

class; squad
【法】 squad