"This is a slow-rolling crisis that has been going on for some time. This is not new, " he said at a White House press conference yesterday.

在昨日白宫举行的记者会上，奥巴马表示：“这是一场已持续一段时间的缓慢发酵的危机，不是什么新情况。”

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Motorcyclists often slow by downshifting or merely rolling off the throttle, thus not activating the brake light.

机车通常会利用降档或是降低油门开度来减速，这些时候刹车灯是不会亮起的。

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The one-dayer also bowled Bryant, who reached 69 after a slow-rolling four hours at the crease.

BBC: England seamers halt run charge

The Rangers pulled Lundqvist with 1:15 left, but the Bruins quickly found the empty net on a slow-rolling shot by Campbell.

WSJ: Bruins eliminate Rangers with 3-1 win in Game 5

I-405 was a slow-rolling conveyor belt of anxiety.

WSJ: Keep Calm and Carry a Gizmo