任何在晚上沿著乡间道路开车的驾驶人，每英里就要停下车来施放火箭信号、等待10分钟让路上的家畜被清空后继续驾车前进。
Any motorist driving along a country road at night must stop every mile and send up a rocket signal, wait 10 minutes for the road to be cleared of livestock, and continue.
而更大的螺栓就要匹配更大的螺母，这就意味著需要直径更大的螺栓为上紧螺母创造条件。
And the more big bolt will match more nut, which means more need for the bolt diameter to tighten the nut create conditions.
世界很大，人活著，就要多走走，多看看。
The world is big, we should travel and see the world while we can.
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