Motorcycles will get a digital assist, too. People often miss them in their rearview mirrors, but to automated cars they will be as visible as an 18-wheeler.
2
最终他们放大了自己的误差，而不是彼此抵消误差，正因为如此，每一轮都造成估计的数字误差更大。
Instead of canceling out their errors, they ended up magnifying their biases, which is why each round led to worse guesses.
3
2002年，鲁拉的民调数字较第一轮投票结果高出百分之三；2006年，也高出了百分之四。
In 2002 opinion polls gave Lula three percentage points more votes than the first-round result; in 2006, the difference was four points.
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