We find it necessary to get a map while traveling.

我们发现旅游时有一张地图很必要。

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You may find it necessary to finish the work ahead of time.

你会发现有必要提前完成工作。

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With so many documents being added, we find it necessary to archive old ones.

由于有这么多的文档要添加，我们发现有必要将一些老的文档归档。

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This is necessary, it's hard to find holes in a Nobel Prize worthy idea.

这是很必要的，在一个获得诺贝尔的想法中,很难发现漏洞。

麻省理工公开课 - 化学原理课程节选

Many have chosen to go it alone, but others still find it necessary to hire a pro.

FORBES: How To Check Out Your Stock Broker

Many entrepreneurs find it necessary to do their own marketing at the start.

FORBES: Getting the mousetrap to market

You find it necessary to measure the degree of our success against the benchmark of America strictly in cash terms.

ECONOMIST: Branson's Concorde offer