purely 
英 [ˈpjʊəlɪ]  美 [ˈpjʊrli] 
adv. 纯粹地；完全地；仅仅；纯洁地

例句：
It is a racing machine, designed purely for speed. 

它是一种比赛用机器，完全是为速度设计的。

The government said the moves were purely defensive. 

政府表示这些举措完全是防御性的。

It's just purely coincidental. 

这完全是巧合。

His decision to leave was made for purely personal reasons. 

他决定离开完全是出于个人原因。

He is coming here purely and simply because he wants to play Premiership football again. 

他纯粹是因为想要再次参加超级足球联赛才要到这里来。