Put on a helmet, fire up your engine and head out on the open road.
戴上头盔，发动引擎，开上乡村干道。
Miners wore a helmet as a guard against falling rocks.
矿工头戴钢盔，防备落下的岩石。
They now face the prospect of having to wear a cycling helmet by law
他们现在面临的情形是：不久将需要依法佩戴摩托车头盔。
The tennis umpire wore a sun helmet.
那位网球裁判戴着硬壳遮阳帽。
He donned work clothes and a wicker helmet.
他穿上工作服，戴上柳条帽。