However, the amount of fallout will vary based on the size of the device and its proximity to the ground.

然而，尘降物的数量会因核装置的大小以及爆炸时与地面的距离而不同。

youdao

The team found they were able to get accurate measurements at all heights around the turbine, but realised that installing the device on the ground was far from ideal.

研究小组发现他们能够得到涡轮机周围所有高度的精准的测量数据，但是同时也意识到将装置安放在地面远非理想选择。

youdao

The battery-powered device uses cutting edge bionic technology to adapt to a person's stride, speed and the type of ground and can help prevent stumbles.

这款通过电池供电的假肢利用了仿生技术，切合了使用者走路的步伐步调以及地面状况，这就避免了截肢患者走路蹒跚的问题。

youdao

The helicopters are monitored as they fly autonomously to a forward operating base, where a marine controller on the ground takes over using a portable device to direct the drop.

ECONOMIST: Autonomous helicopters

"The breakthrough UI defines a new language for human-device interaction that is built ground-up for eye-free operation, " said Boaz Zilberman, chief executive officer of Project RAY.

ENGADGET: Qualcomm develops eyes-free smartphone for the blind and visually impaired, calls it Ray

Others worry about the device becoming a bacterial breeding ground.

WSJ: Greasy Smudges Frustrate iPad Owners