基础

foundation; base; basis; foot; root; element; essential; cornerstone; stuff; ground; groundwork; infrastructure; fundamental; rudiments; backbone; baseline; substructure; footing; underpinning; handmaiden; basic; basal; core; elementary; underlying; rudimentary; elemental; fundamentally

方法

method; way; means; manner; road; avenue; gateway; route; measure; approach; mode; system; channel; medium; methodology; formula; prescription; recipe; technique; tool; device; instrument; mechanism; mechanic; tack; line; view; lever; technical