The model of the head down tilt trial can be used to study the change of physical functions and mechanisms when the people lie in the state of being inverted.
应用头低位倾斜试验模型，研究人体处于倒置状态下产生的机体功能的变化及发生机理。
After chewing, you would tilt your head back so the food would slide down your throat.
咀嚼之后，转一转头，这样的食物就会滑下喉咙。
I tilt my head back and let the water stream down my face until I can't tell anymore where the water ends and my tears begin.
我向后仰起头，让水流滑下我的脸颊，直到我分不出哪些是热水，哪些是泪水。
You don't want your head to be tilted for long hours so make sure that you don't have to tilt up or down.
你不想你的头是这么长的时间，确保倾斜，你不必倾斜向上或向下。
In contrast, men become more masculine if they tilt their head back a bit and look slightly down their nose.
相反，男人如果头向后伸眼睛微微向下看鼻子会更有男子气概。
In contrast, men become more masculine if they tilt their head back a bit and look slightly down their nose.
相反，男人如果头向后伸眼睛微微向下看鼻子会更有男子气概。
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