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。
2
Avoiding temptation is one effective strategy for maintainingself-control.
远离诱惑是坚持自我控制的一个有效策略。
3
These functions are then evaluated by natural selection: if they succeed in maintaining a self, then the self continues to exist; if they fail to maintain a self, then the self disintegrates.