选用质量好的睫毛膏，试用几种牌子，然后选出最适合你的一款——不晕染的，或者不会过几个小时就脱妆的。
Experiment with several brands and pick the best one for you - the one that does not smudge under your eyes or rub off after a couple of hours.
本文研究单不晕镜和双胶不晕镜用于测绘与计量光学系统的设计理论和方法。
This paper investigates the design theories and methods ir applying the single and dual cement aplanats in the optical system used in surveying and metrology.
太空晕动症会对一半或一半以上的宇航员产生影响，但持续时间一般不超过失重的最初三天左右。
Space motion sickness may affect half or more of space travelers, but usually does not last beyond the first three days or so of weightlessness. ?
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