天火字典

英日字典：こつこつはたらく

こつこつはたらく

こつこつ働く

コツコツ働く

こつこつ働く：

(exp,v5k)
to work hard
to toil
to moil
to keep one's nose to the grindstone
to slug away
コツコツ働く：

(exp,v5k)
to work hard
to toil
to moil
to keep one's nose to the grindstone
to slug away

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