There was a sign telling motorists to slow down.

有一个让汽车司机减速的指示牌。

《牛津词典》

Another universal warning sign is when fluctuations in the system slow down.

另一个通用的预警信号是，系统中的变动速度慢下来。

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Yet some impact investment funds are still reluctant to sign up: they recognise the protection such a system would offer; but they are reluctant to commit to anything that might slow the cash flow.

然而，一些影响力投资方仍然不愿意签署：他们认识到这种系统将提供的保护，但他们都不愿承担任何可能减缓现金流带来的后果。

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But banks have been slow to sign off on the arrangement.

NPR: Credit Woes Squeeze Bond Insurance Business

So why are people being so slow to sign up?

CNN: Do Web users fear the digital Reaper?

Tim Backhouse, who moved to Bow two years ago, said he hoped the 15ft (4.5m) sign would slow traffic.

BBC: Large 30mph speed sign painted on house in Bow, Devon