They had acted rashly, without thought.

他们未加考虑就轻率行动了.

《简明英汉词典》

Learning without thought means labour lost ; thought without learning is perilous.

学而不思则罔, 思而不学则殆.

辞典例句

Learning without thought is labour lost.

学而不思,白费功夫.

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Without thought for her own safety, she jumped into the river to save him.

她一点没想到自身安危就跳进河里去救他.

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True charity is the desire to be useful to others without thought of recompense.

真正的慈善,便是但愿有益于人,而不念其回报.

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The man without thought for the future will surely have trouble close at hand.

人无远?,必有近忧.

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Zombies serve the darkness blindly and without thought, attacking only with their bare hands.

僵尸常常出现在黑暗不见五指之处,而且不经思考, 用它们赤裸的手攻击.

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