"They really have shorter sleep requirements," said study researcher Ying-Hui Fu, a professor of neurology at the University of California at San Francisco, Mission Bay.
“她们确实需要短时间的睡眠”，研究人员Ying-Hui Fu提到，坐落在旧金山使命湾（Mission Bay）的加州大学的一位神经学教授。
The reconnaissance bay is lowed during imagery reconnaissance mission and retracted into the fuselage during high-speed flight.
侦察舱在图像侦察任务时降下而在高速飞行期间缩回进机身之内。
The reconnaissance bay is lowed during imagery reconnaissance mission and retracted into the fuselage during high-speed flight.
侦察舱在图像侦察任务时降下而在高速飞行期间缩回进机身之内。
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