Geography is a useful subject.

地理是门有用的科目。

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How to learn English well Now, English is a useful subject.

怎样学好英语如今，英语是一门有用的学科。

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It can turn your not - so - fast machine of yesteryear into a useful subject of your network, and give it a new purpose in its short life.

它赋予您那台“慢吞吞”的老机器以崭新的使命，变成网络里相当有用的一员。

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Before Shadow Account's hero starts out on his quest into the dark heart of bookkeeping, he gets a useful tutorial in the subject from a pro.

FORBES: Killers With Green Eyeshades

Austen was certainly no plaster saint, and his approach is a useful corrective to the daintification of his subject in the past.

ECONOMIST: Literary lives

But even that half loaf would be a useful boost for South African science, and a sign that the traditional powers of the subject are willing to share the goodies.

ECONOMIST: A new radio telescope may catalyse African science