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いわゆる， 所謂
1. what is called, as it is called, the so-called, so to speak
所谓的，正如它所称的，所谓的，可以这么说
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
