见证了

1.
witness
【免费下载】考研英语词汇大全 - 豆丁网 ... perplexing adj. 令人困惑的 witness v. 见证了 undergo v. 经历了 ...
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2.
attended
... 还有就是确立 further details have also been spelled out 见证了 attended 完备法律法规 a full fledged legal system ...
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