The paper also contains a nice little experiment with airborne collision avoidance systems.

该篇论文还包含一个很棒的小实验，是关于机载防撞系统的。

Why do you think your whole building is made out of nerf?

不然你那整栋楼怎么都是防撞材料造的？

On April 11th a Californian strike-prevention programme expanded operations across North American waters.

4月11日，一个加州的防撞计划在北美水域扩大范围。

Sure, said Roy. His ears were getting hot under his crash helmet.

当然，罗伊说。他的防撞头盔下的朵越来越热。

Ken Stonex helped GM Design a so-called crash proof highway test site called " The Proving Ground" .

Ken Stonex 帮助通用计一个名为“试验场”的所谓防撞高速公路试验场。

Through the glasses Pete could see the jeeps, filled with men in their gleaming grey uniforms, crash helmets tight about their heads, blasters glistening in the pale light.

透过望远镜，皮特看到吉普里坐满身着闪亮灰色制服的士兵，他们头戴紧扣的防撞头盔，手中的武器在微弱的光线下闪闪发亮。

Then, you know, the plane obviously came down and I was in the front of the plane came down and So I lift my feet up, I lift my head up, that was my crash position.

然后你知道， 飞机显然坠毁， 我坐在飞机前部， 所以我就把脚抬起来，把头抬起来， 这就是我的防撞姿势。

Nekhludoff walked around the house where he saw two disheveled women, one of whom was evidently pregnant, standing near the staircase. On the stairs, with his hands in the pockets of his crash overcoat, stood the clerk.

聂赫留朵夫绕着屋子走来走去，看见两个衣冠不整的女人，其中一个显然怀孕，站在楼梯旁。店员站在楼梯上，双手插在防撞大衣的口袋里。