I've made some useful contacts in journalism.

我在新闻界结交了一些有用的人。

《牛津词典》

Both establishing and maintaining useful contacts are necessary in the modern business world.

在当今商界，建立和保持有益的联系是很有必要的。

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If your friends know that you're trying to start up a business, they can support you - by offering useful contacts, or by encouraging you, or by celebrating your successes with you.

如果朋友们知道你正在努力开始做某一件事，他们能够支持你——通过提供有用的合同——或者鼓励你，再者和你一起庆祝你所取得的成功。

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This is the key for LinkedIn success: transitioning useful contacts from your recreational social circles into your professional circles.

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They can help on negotiations, operating a business, hiring or firing, accounting, finance, legal and probably most useful of all, their contacts.

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Teaming up is useful the Chinese partner can bring handy contacts, for example but management styles can conflict.

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