美国梦的演化经历了不同阶段和进展，尽管如此，美国梦永远不会破灭，消失，而会永远的持续，蓬勃发展。
The evolvement of the American Dream experienced different phases and movements, nevertheless, the American Dream will never wither and fade but endure and flourish for ever.
剩余脊髓灰质炎流行地区的强劲进展和最近采用新的工具已经在全世界除一个国家外的所有国家将全球根除脊髓灰质炎努力推进至其最后阶段。
Strong advances in the remaining polio endemic areas and the recent introduction of new tools have moved the global polio eradication effort into its final phase in all but one country of the world.
有多种疗法，但治疗窗口实在是太短暂了，去获得正面的结果和病情进展快到下一个阶段。
There are a variety of treatments, but the treatment window is too short to obtain positive results and the disease progresses quickly to the next stage.
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