ぼつぼつgradually, here and there, spots, pimples

顔(かお)にボツボツとニキビができました。

I gradually got pimples here and there on my face. {gradually, here and there, spots, pimples}

紙(し)に鉛筆(えんぴつ)の先(さき)でボツボツと穴(あな)を開(あ)けました。

I made spots here and there on the paper with the tip of the pencil. {gradually, here and there, spots, pimples}

ボツボツと雨(あめ)が降(ふ)ってきたから、早(はや)く家(いえ)に帰(かえ)ろう。

The rain started to fall gradually, so let's hurry home. {gradually, here and there, spots, pimples}

もう定時(ていじ)だから、ボツボツと帰(かえ)る準備(じゅんび)をしようじゃないか。

It's already regular time, so shouldn't we start gradually preparing to go home? {gradually, here and there, spots, pimples}

路上(ろじょう)パフォーマンスを始(はじ)めたら数(すう)人(にん)がボツボツと集(あつ)まってきました。

When I started the street performance, a few people gradually began to gather. {gradually, here and there, spots, pimples}