月亮永远是用相同的一面向着地球。

The moon invariably displays the same face to the earth.

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用面向对象语言写一个应用。

Write an application in an object-oriented language.

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本系统的面向对象是机车上用的铅酸蓄电池。

The system is aiming to the battery of locomotive.

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本系统的面向对象是机车上用的铅酸蓄电池。

The system is aiming to the battery of locomotive.

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