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1·Objectives: To study the therapeutic effects of Q-switch laser in treatment of freckles and lentigo.

目的：观察应用Q开关激光治疗雀斑及雀斑样痣的疗效。

2·Objective: To observe the therapeutic effects of Q-Switched Alexandrite laser in treatment of freckles and lentigo.

目的：观察应用Q开关激光治疗雀斑及雀斑样痣的疗效。

3·With ice on the north part of Shaluli hills of the great Lentigo Mountain, the highest peak is 6168 meters above the sealevel.

冰雪皑皑，巍峨雄伟的雀儿山居沙鲁里山系北段，最高峰海拔6168米。

4·Across Lentigo mountain The route of Sichuan-Tibet is always the most dangerous and it is obviously not the best time to go to Tibet in May when some higher and colder places are still snowing.

翻越雀儿山历来川藏线都是最为传奇险峻的，五月初进藏显然不是最好的时间，很多高寒地带还在下雪。