第一个是“压缩垂直性”，即单个村庄所处的位置可以方便地进入临近的生态区。
The first is "compressed verticality," in which a single village resides in a location that permits easy access to closely located ecological zones.
探讨不同术式对垂直性斜视的矫正效果。
To investigate the surgical effect of vertical strabismus with different operating methods.
采用不同手术方式施垂直性斜视矫治，记录并比较手术效果。
The vertical strabismus was treated with different operating methods and the effect were recorded and compared statistically.
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