場数(ばかず)を踏(ふ)むto gain experience, to get accustomed (with something)

場数(ばかず)を踏(ふ)んでいる彼(かれ)は経験(けいけん)豊富(ほうふ)である。

He is experienced because he has gained experience.

新人(しんじん)よりも場数(ばかず)を踏(ふ)んでいる彼女(かのじょ)の方(ほう)が頼(たよ)りになる。

She is more reliable than the newcomer because she has gained experience.

多(おお)く試験(しけん)の場数(ばかず)を踏(ふ)んでいる彼(かれ)は試験中(しけんちゅう)も冷静(れいせい)でした。

Having gained a lot of experience in exams, he remained calm during the exam.

場数(ばかず)を踏(ふ)んでいるとはいえ、あのアイドルでも緊張(きんちょう)はしうる。

Even though she has gained experience, even that idol can get nervous.

今(いま)までに多(おお)くの場数(ばかず)を踏(ふ)んできたつもりで舞台(ぶたい)に立(た)つと緊張(きんちょう)しません。

I don't get nervous when I stand on stage because I believe I have gained a lot of experience up to now.