Rent a fast sports car and speed down the Autobahn.

租一辆快速跑车在高速公路上跑一回。

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Remember riding your bike as a kid, pretending to go at warp-speed down a hill?

还记得你小时候骑单车的时候，曾经尝试着从山上冲下，来达到曲速速度吗？

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Kennedy missed the main road and, driving at speed down a narrow dirt track, ran off a narrow bridge.

肯尼迪错过了主干道，飞快地冲下一条狭窄的泥土路，冲出一条窄桥。

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Before the flight went down, sensors gave conflicting information on air speed to the plane's computers, possibly because of ice.

VOA: special.2009.06.13

And the experimenter is back there with the speed knob and at random intervals he just speeds up the tape of their heart and then slows it down.

实验者回到实验室，带着录音设备,随机地,他加速了心跳的录音,然后又慢下来。

耶鲁公开课 - 心理学导论课程节选

"Motorists should keep their speed down, allow extra time for journeys and take extra care on the road, " a spokesman said.

BBC: Satellite image of UK under snow - University of Dundee

It's home to museums, concert halls and music venues such as the intimate Belly Up where shows often sell out faster than an expert skier can speed down a bunny slope.

CNN: 12 fun ways to hit the slopes without skis

Verizon initially said in a FAQ that it would slow users' access speed down to 256Kbps, "a little faster than typical dial-up speed" for up to three days - but later deleted the information from its site.

BBC: US internet 'six strikes' anti-piracy campaign begins