They swore an oath of loyalty to the country.

他们宣誓要报效祖国.

《简明英汉词典》

But to oblige a gentleman like you I'd do a good deal, I do assure you.

可是为了报效象您这样的老爷, 我保证咱可以特别通融.

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We should to help them acquire knowledge. They can to our country in the future.

我们应该尽力帮助他们获得知识, 这样他们将来才能报效祖国.

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For one day I can have two down sons so I can hold to country.

为了有一天我能有两下子,可以报效祖国.

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I take my hat off to those who serve this country with honor.

我脱帽向那些报效祖国的人致敬.

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