使つかい慣ならす

godan verb (-su)

get used to using; break in; train

Used for becoming accustomed to using a tool, device, or animal through repeated practice. Often implies making something easier to handle over time.

• 新あたらしいスマホを使つかい慣ならすのに一いっ週しゅう間かんかかった。

  It took a week to get used to using the new smartphone.

• 彼かれは野や生せい馬ばを使つかい慣ならす名めい人じんだ。

  He is an expert at breaking in wild horses.