One-meter distance on the ground can be easily jumped over.

一米远的距离在平地上能轻而易举跳过。

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The vibrating acceleration on the ground is strongest over the tunnel, and weakens gradually in the lateral directions. It is amplified at a certain distance away from tunnel central line.

地表振动加速度在隧道正上方强度最大，往两侧逐渐减弱，而在离开隧道轴线一定距离部位出现了一加强区。

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Microwave technology has exited for over half of the century. It transmits the information by ground visual distance in microwave frequency band. It is a kind of wireless transmission technology.

微波技术问世已经半个多世纪，它是在微波频段通过地面视距进行信息传播的一种无线传输手段。

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Instead, the prototype rose a short distance, rolled over and slammed into the ground.

CNN: Moon lander prototype blows up in NASA test

As the camera panned over scurrying people and injured lying on the ground, the second blast goes off a short distance down the street.

NPR: On Screens, Familiar Images Of Terror Flash