ahelmet是什么意思

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。