Maintaining safe speeds and being electric, self-driving cars would drastically reduce pollution levels and dependency on non-renewable fuels.

保持安全速度和电力驱动的自动驾驶汽车将大幅降低污染水平，减轻对不可再生燃料的依赖。

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This will drastically reduce the stated risk.

这会显著降低风险。

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Ministers have played down a report that they may drastically reduce the drink-drive limit for motorists.

BBC: Government ponders report on lowering drink-drive limit

Spurned MCIsuitor GTEhas sued to block the merger, claiming it would drastically reduce competition.

FORBES: Grand illusions

Worrell's Living Machines are water recycling systems that drastically reduce water use and can eliminate sewer discharge.

FORBES: Magazine Article