除了简单地标绘地理点外，为美国地图中各个州显示色彩渐变效果也是一种提供信息的有效方法。
Shading in the various states on a map of the United states is an effective means of providing another channel of information beyond that available by simply plotting points.
过去的事实证明，处理这项艰巨任务完全可采用以前解决困难问外时使用的方法——从实际效果出发，一点一滴，通过大家不懈的努力来完成。
On the evidence of the past, it can be handled in the same way that hard problems have been coped with before-piecemeal, pragmatically, by the dogged efforts of many people.
本文根据65例白内障现代囊外摘除联合后房型人工晶体植入，讨论后房型人工晶体植入术的方法、注意点、并发症及其治疗。
Based on the 65 consecutive cases of modern excapsular extraction with posterior chamber IOL implantation, discussing the method and complications of posterior chamber IOL implantation.
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