Wearing a helmet is the single most effective way of reducing head injuries and fatalities resulting from motorcycle and bicycle crashes.

带头盔是减少由摩托车和自行车撞车造成的头部损伤和死亡的单一最有效办法。

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These companies have a bicycle, motorcycle and small passenger car manufacturers.

这些公司曾经是自行车、摩托车及小客车的生产厂家。

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Either I jump on my horse, or I take my bicycle or my motorcycle or my car and you see me being accelerated in this direction.

我可以在骑着马，骑着自行车或开着车，你们看到我正做加速运动。

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In Wamena, a sprawling town in the highlands, it is wise to take a bicycle rickshaw, not a motorcycle taxi.

ECONOMIST: Banyan

Simpson didn't have an engineering degree, either, but that didn't stop him from constructing a motorcycle with a bicycle and a stolen motor when he was an Air Force staff sergeant on Saipan during WWII.

NPR: Whirligig Art Creator Vollis Simpson Dies At 94

Above the factory floor, the semicircular gallery of the museum showcases the evolution of the Ducati motorcycle from the early days just after World War II, when the company introduced its first auxiliary bicycle engine (called the Cucciolo, or "puppy, " because of the distinctive barking sound it made), up through the company's first motorcycles in the 1950s and the road bikes and racing bikes that followed.

WSJ: At the Heart of Ducati