机器人可以向遥远的人类控制员请求前行、开火，友军会携带识别敌友的转发器。
Robots may query human controllers at remote sites for the go-ahead to fire, and friendly forces may carry transponders that identify them as "friends".
但是传统的看法是为了应对目前行业的动荡，对冲基金都需要强力的内部控制和合作者的守口如瓶。
But conventional wisdom is that hedge funds need the tight control and secrecy of partnerships in order to cope with the turbulence of their industry.
动作灵活而快捷的南极海豹依靠其强大的鳍状前肢，让它们在水中顺利前行；小一些的后鳍帮助控制方向。
Swift and agile, Antarctic fur seals rely on their powerful front flippers to propel them through the water; smaller hind flippers help with steering.
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