U.S. spy agencies, through In-Q-Tel, have invested in a number of firms to help them better find that information.

美国情报机构通过 In-Q-Tel 已经投资了好几家公司来帮助他们更好地寻找这类情报。

youdao

Helen: a number of firms have been downsizing.

海伦：有几家公司最近正在裁员缩编。

youdao

Imagine an industry consisting of a number of firms producing differentiated products.

假设存在由较多数量企业、产品有差异组成的行业。

youdao

There were probably a number of firms that, over that ten-year period, went out of business.

在这10年间,可能有很多企业已经破产

耶鲁公开课 - 金融市场课程节选

So there's a small number of firms and their actions affect each other.

少数几家公司的决策会互相影响

耶鲁公开课 - 博弈论课程节选

Meanwhile, a number of firms have already been established to offer the technique to drugmakers.

ECONOMIST: Monitor

That drop is not new and has had dire consequences for a number of firms over the last few years.

FORBES: As Trading Volumes Plummet, What About Exchange & Investment Banking Stocks?

Nomura has admitted that some of its staff leaked sensitive information on planned share offerings by a number of firms.

BBC: Morning business round-up: Sharp shares dive on losses