ばんばんbang bang (sound of a hammer or gunfire), doing something at a mad pace (spend money, work)

優秀(ゆうしゅう)な社員(しゃいん)が仕事(しごと)をバンバン片付(かたづ)けた。

The excellent employee tackled the work at a mad pace. {bang bang (sound of a hammer or gunfire), doing something at a mad pace (spend money, work)}

机(つくえ)をバンバンと叩(はた)きながら子供(こども)が泣(な)いている。

The child is crying while banging on the desk repeatedly. {bang bang (sound of a hammer or gunfire), doing something at a mad pace (spend money, work)}

洋服(ようふく)をバンバン買(か)ったせいでお金(かね)がなくなってしまった。

I ran out of money because I was buying clothes at a mad pace. {bang bang (sound of a hammer or gunfire), doing something at a mad pace (spend money, work)}

会議(かいぎ)室(しつ)のテーブルをバンバンと叩(はた)きながら部長(ぶちょう)は熱弁(ねつべん)しています。

While banging on the conference room table, the department head is passionately making his point. {bang bang (sound of a hammer or gunfire), doing something at a mad pace (spend money, work)}

怒(おこ)って机(つくえ)をバンバン叩(たた)くような人(ひと)とは、一緒(いっしょ)にいてリラックスできない。

I can't relax when I'm with someone who gets angry and bangs on the desk. {bang bang (sound of a hammer or gunfire), doing something at a mad pace (spend money, work)}