湿度指示器将信息传至控制中心。
Humidity indicators transmit information to the control centre.
指示器的位置应尽量靠近包的中心。
The location of the indicator should be as near to the centre of the pack as possible.
我盯着我眼前的跑道和空速显示，直到航线指示器落在了展览中心的位置。
I watch the runway in front of me and my airspeed and anticipate arriving at show center.
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