As someone has said, "The devil aims high."

有人说：“魔鬼有大志”，这句话实在不错。

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Machines could do it all, someone has said.

很多人说过‘机器就能处理所有的工作’。

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Someone has said that the measure of love is when you love without measure.

有人曾经说过，爱的限度就是无限度地去爱。

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Someone who has the ability to grow plants well is said to have a green thumb.

VOA: special.2010.05.23

and so they just, knowingly or unknowingly, they steal and copy what someone else has already said.

所以他们就，有意识或无意识地，偷窃或者拷贝别人说过的东西。

抄袭是很严重的问题 - SpeakingMax英语口语达人

"Someone has said we have had eight managers in four years, " said Proctor.

BBC: SPORT | Football | My Club | Livingston | Livi hoping to lift transfer ban

The bottom line is that we're taking responsibility because ultimately, as someone has said in Washington before, the buck stops here.

NPR: Voters Tell Washington that Ethics Matter

The weirdest thing someone has said to me through my entire pregnancy.

NPR: Newspaper Apologizes for Shakur Story