他们发出尖叫声并根据反射的回声测量它们的环境。
They emit squeaks and gauge their environment based on the echo returned.
两者兼顾。他们要既本土又“西式”。根据不断变化的环境，二者各有所长。
Both. They should localize and stay "western." Depending on the constantly changing circumstances, each has its advantages.
移动服务的便利性，将使得实时数据根据情境环境和地理方位推送给差旅人士，提高他们的工作效率。
The convenience of mobile services will enable travelers to be more productive by having just-in-time data pushed to them based on situational circumstances and geographic location.
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