S63. stimulate-S64. strenuous

stimulate

构词：stim（= sting 刺）＋ul＋-ate（v.）

刺激 v. 激发。

相关：stick; distinguish/distinct, extinguish/extinct, instinct

搭配：stimulate economy / investment / growth / demand / production / appetite / desire / effect / innovation 

近义：spur, urge, inspire, encourage, prompt, impel; fuel, arouse, incite, provoke

考点：因果关系

strenuous

构词：stren（= stern 艉, 坚硬）＋u＋-ous（adj.）

非常坚硬的 adj. 费力的, 艰苦的, 坚决的

搭配：a strenuous work / exercise / effort / process / way / goal

近义：hard, tough, arduous, toilsome, exhausting; 

            determined, resolute, persistent