So it's surely no exaggeration to talk about how the China business landscape has undergone dramatic changes in just 20 years.
所以，就中国经商环境仅20年间发生的巨变展开讨论，一点也不为过。
As INCOMPLETE as these four types of evidence are, they indicate that the IGM has undergone at least three dramatic changes over the course of cosmic time.
上述四类证据尽管不完全，但它们指明了：在宇宙时间的历程上，IGM至少已经历三次剧烈的转变。
As INCOMPLETE as these four types of evidence are, they indicate that the IGM has undergone at least three dramatic changes over the course of cosmic time.
上述四类证据尽管不完全，但它们指明了：在宇宙时间的历程上，IGM至少已经历三次剧烈的转变。
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