unbalanced force from internal pressure 管道内压力不平衡力
The centre of pressure moves rearward and the aeroplane becomes unbalanced.
气压中心后移，这架飞机失去了平衡。
In addition, unhealthy lifestyle is another potential risk; unbalanced diet, lack of physical exercise, pressure and depression, which result in sub-health.
另外，不健康的生活方式也是潜在的致病因素，比如胡吃海喝、缺乏锻炼、紧张压抑等，这些都会导致亚健康状态。
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