英里每小时

We´ve had one of these fly nine miles through the air at 35 miles an hour with just a little battery in it.

我们用其中的一个在空中以35英里每小时的速度飞行了9英里它里面只带了一点电池。

So this is going to be a crash where they´re going to slam this thing forward into a wall at thirty miles an hour and see what happens. OK?

碰撞发生的时候，这整个装置会被使劲摔到前面的墙上，速度是三十英里每小时（四十八公里每小时），然后我们看发生了什么。

He said the car reached 94 mph before a trooper, calling out instructions from a megaphone, helped him slow down and turn off the engine.

他说，车到达之前，骑兵九十四英里每小时，呼唤从扩音器指示，帮他放慢，关掉引擎。

Slowing to 25 mph, he strained to see the highway in front of him.

降到25英里每小时，他勉强的看着前方的高速公路。

Capable of speeding across the water at 50mph, the Seabreacher X is an underwater vessel which boasts´the agility of a dolphin´.

这艘号称如‘海豚一般敏捷’的仿生潜艇SeabreacherX的水面时速可以达到50英里每小时。