シュッシュッchoo-choo, chug-chug, chuff-chuff, hiss-hiss, brush-brush, scrub-scrub

機関(きかん)車(しゃ)がシュッシュッと走(はし)っています。

The train is running with a chuff-chuff sound. {choo-choo, chug-chug, chuff-chuff, hiss-hiss, brush-brush, scrub-scrub}

ヘビがシュッシュッと威嚇(いかく)する様子(ようす)は恐(おそ)ろしい。

The sight of a snake hissing in threat is terrifying. {choo-choo, chug-chug, chuff-chuff, hiss-hiss, brush-brush, scrub-scrub}

靴(くつ)磨(みが)きをしている人(ひと)が靴(くつ)をシュッシュッと磨(みが)いています。

The person who is shining shoes is brushing them briskly. {choo-choo, chug-chug, chuff-chuff, hiss-hiss, brush-brush, scrub-scrub}

担任(たんにん)の先生(せんせい)が教室(きょうしつ)の床(ゆか)をシュッシュッと木(き)の箒(ほうき)で掃(は)いています。

The teacher in charge is brushing the classroom floor with a wooden broom, making a brush-brush sound. {choo-choo, chug-chug, chuff-chuff, hiss-hiss, brush-brush, scrub-scrub}

汽車(きしゃ)がシュッシュッと走(はし)る音(おと)は、汽車(きしゃ)にしか出(だ)せない独特(どくとく)な音(おと)である。

The sound of a train running with a "choo-choo" is a unique sound that can only be produced by a train. {choo-choo, chug-chug, chuff-chuff, hiss-hiss, brush-brush, scrub-scrub}