You'll wear yourself out if you carry on working so hard.

你要是继续这样拼命工作，身体会吃不消的。

《牛津词典》

Space exploration is a challenge to human beings. That's why several nations try hard to carry out space exploration continuously.

太空探索对我们人类来说是个挑战，这也是为什么许多国家不断进行探索的原因之一。

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Space exploration is a challenge to human beings. That 's why several nations try hard to carry out space exploration continuously.

太空探索对我们人类来说是个挑战，这也是为什么许多国家不断进行探索的原因之一。

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This aim is laudable, but three things will make it hard to carry out.

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In fact, even if it cared to try, Zimbabwe's government would find it hard to carry out the macroeconomic reforms that Britain insists on.

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An old but creaking system of consensus, the lingering loyalty of bosses and employees to an unaffordable social-welfare model, and a web of constitutional checks and balances designed to prevent even the most fleeting thought of another tyranny, have all made it extraordinarily hard to carry out reform in Germany.

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