A: Do you have an extra helmet?

Put on the helmet, please.

请戴上防护帽.

Taking a child on a motorbike without a helmet ! Have you completely lost your mind?

骑摩托车带孩子却不带 头盔,你是不是疯了?

I've got to have my helmet.

我必须找回盔帽.

Do not forget to put on your safety helmet.

别忘了戴好安全帽.

The helmet is provided with a lighting device and a battery.

在头盔上还安有照明器具和电池.

The rabbIt'said, " I wish I had a motorcycle to go with that helmet. "

兔子: “ 我希望能有一辆与我的头盔相配的摩托车. ”

Now do you know you wear a helmet?

现在你知道为什麽你每次都该戴安全帽了 吧 ?

Motorcyclists must wear helmets to shield them from injury.

摩托车手必须戴头盔保护自己免受伤害.

The construction workers wore metal helmets for protection.

建筑工人为了防护而带金属头盔.

The officers all wore helmets; better-fitting helmets.

军官们都戴钢盔; 大小比较合适.

Motorcyclists should wear helmets to shield them from injury.

骑摩托车的人必须戴头盔以防受伤.

So we see advertisements in football grounds, on cyclist's shirts and racing driver's helmets.

因此我们在绿茵场上, 在自行车运动员的T恤上和赛车手的头盔上看到广告.

Their helmets glanced in the sunlight.

他们的头盔在阳光下闪着亮光.

Commander Wolffe's clone troopers have stylized wolf muzzles painted on their helmets.

沃尔佛指挥官手下的克隆人士兵在头盔上都绘有标志性的狼嘴图案.

Their helmets glanced in the sun.

他们的头盔在阳光下闪耀.

He muttered against the men who wear helmets and carry clubs.

他咕咕哝哝地抱怨那些头戴钢盔、手执警棍的家伙.

The simulation of satellite orbit magnetic field produced by two pairs of Helmholtz coils is studied.

报道利用两对赫姆霍兹线圈模拟卫星的磁环境的研究.

The strain energy density function equals the Helmholtz.

应变能密度函数等于亥姆霍兹函数.

The fundamental solutions for the Poisson equations and modified Helmholtz equations were set up.

求解了泊松方程和修正的亥姆霍兹方程的基本解.

The electron displacement meets non-linear relation when the radius of Helmholtz coil is given.

当亥姆霍兹线圈的半径给定时,电子偏移距离与电流满足非线性关系.