在温带确实是这样，千万年的时间，冰川能沿山坡下磨数英里。
That's true in temperate regions, where glaciers-glacially-flow downhill. Over thousands of years, the frozen masses can scrape miles off of mountains.
目的探讨准分子激光角膜上皮瓣下磨镶术（LASEK）中乙醇对角膜伤口愈合过程的影响。
Objective To assess the effects of 20% ethanol used in LASEK on corneal wound healing.
目的比较准分子激光原位角膜磨镶术(LASIK)和准分子激光角膜上皮瓣下磨镶术(LASEK)后角膜知觉的恢复情况。
Objective to compare the recovery of corneal sensitivity after laser in situ keratomileusis (LASIK) and laser-assisted subepithelial keratectomy (LASEK).
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