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Each of the 11 apartments occupies an entire circular floor, costs about $550,000 and revolves at the occupant’s command, in either direction, once an hour.

公寓楼共有11套房间，价值55万美元的每一套房间各占据一整个圆形楼层，并且可以按照住户的指令不论正反向每小时旋转一周。

youdao

Judging target main attack direction is an important link in air defence artillery campaign command.

判断目标的主攻方向，是防空兵作战指挥中的重要环节。

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So right now the logistics of a new building are not as important as consolidating command and control, giving specific direction to the Department of Homeland Security and to these agencies to make sure that we fulfill the president's commitment to keep America as safe as possible.

CNN: Ridge: New department ready for new threats