One is a two-wheeled robot that can be moved forward by a user standing at a distance, who wears a battery-powered headset that transmits signals wirelessly.

其中的一个就是二轮机器人，在一段距离以外的使用者可以通过电池供电的耳机发出指令，无线遥控机器人。

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The observed changeof each signal as Cassini moved behind the rings provided a profile ofthe distribution of ring material as a function of distance fromSaturn, or an optical depth profile.

卡西尼号远离土星环而观察到的每个信号的变化提供了一份环材料分布的侧写。 这是一个距土星距离的函数，或是一个光学深度剖面。

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The summer went on and they moved the herd to new pasture, shifted the camp; the distance between the sheep and the new camp was greater and the night ride longer.

夏天还在继续。他们把羊群赶到了一片新的草地上，同时转移了营地；羊群和营地的距离更大了，晚上骑马回营地所用的时间也更长了。

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Expanding from this initial use of the U.S. Postal Service for course correspondence, distance education moved towards live radio shows in 1921 and then televised broadcasts in 1963.

FORBES: Distance Learning Has Been Around Since 1892, You Big MOOC

United moved within touching distance of the title after a comfortable 4-1 win over West Ham at Old Trafford.

BBC: Ferguson piles stress on Chelsea

Under President Hosni Mubarak Egypt used to take the same view, but the new government has moved quickly to distance itself from Israel, helping broker the Palestinian reconciliation deal last week.

BBC: Egypt urges US to back Palestinian state declaration