このドライバーは小さすぎて役に立たない。
tbd
This driver is too small and isn't very useful.
This screwdriver is too small to be any use.
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おやおや。いかな体育の授業といえど・・・真剣勝負の意気込みで臨まなければ、いざ実戦と言う時に役に立ちませんよ。
tbd
Well, even if it is just P.E. class, if you don't take it seriously, it won't do you any good in a real match.
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役に立たないものは省きなさい。
tbd
Leave out anything that is useless.
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彼は役に立たない人間であることが分かった。
tbd
He has proven that he is not worth his salt.
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彼は、いわゆる義務教育は役に立たない物だと考えている。
tbd
He regards so-called compulsory education as useless.
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彼の本はほとんど役に立たない。
tbd
His books are next to useless.
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彼の息子は怠け者で役に立たない。
tbd
His son is lazy and good for nothing.
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彼の助言など役に立たない。
tbd
His advice is of no use.
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彼の意見はいつも役に立たない。
tbd
His opinion is always of no use.
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彼に助力を求めてもあまり役に立たない。
tbd
There's little merit in asking him for help.
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