Meaning of ひたすら in Japanese

Definition of ひたすら

ひたすら(hitasura) · ひたぶる(hitaburu) 【只管 ·一向 ·頓】

(adj-na, adv) nothing but; earnest; intent; determined; set on (something)
彼はひたすら成功を望んで懸命に働く。
He works hard because he is anxious to succeed.

先ずまずは憧れあこがれの作家さっかの文章ぶんしょうの呼吸こきゅうをつかむためにひたすら筆写ひっしゃ、丸写しまるうつしをする。

First, in order to get a feel for your favourite author's work, transcribe and copy in full.

Still others simply travel around America in recreational vehicles, seeing parts of the country they had been too busy to see before.