We choose to go to the moon in this decade and do the other things, not because they are easy but because they are hard.

我们选择在这个十年内飞向月球以及做其他的事不是因为它们容易，而是因为它们很艰难。

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But there are compelling reasons in favor of another Moon landing too, not the least of which is trying to pinpoint the moon's age.

但也存在令人信服的理由支持再度登月，其中包括试图确定月球的年龄。

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We think-but we are not sure-that the moon has a center core which includes molten rock, as the earth does.

我们预料，但是我们不能确定，月球有一个由熔岩构成的地核，如同地球。

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But the mathematician said he could not get the moon.

VOA: special.2009.03.28

But,other countries have not. Critics of Mr.Obama's plan say not returning to the Moon could jeopardize America's leadership in space exploration.

VOA: standard.2010.04.21

In the run-up to the vote on May 6th, in which the Liberals, Labour, and Greens increased their strength at the expense of the Christian Democrats, the Netherlands deployed a technique that did not prevent politicians from promising the moon, but at least forced them to come clean about the cost.

ECONOMIST: Dutch courage

But the expected pictures from that mission were not produced because the rocket missed the Moon by 22, 862 miles (36, 793km).

BBC: 1962: First US rocket lands on Moon

German V2 rockets and communications satellites had to happen, but we did not have to go to the Moon.

FORBES: We Are All Macs Now