appositive clause as subject complement
非限定性定语从句 non-restrictive attributive clause 同位语从句 appositive clause as subject complement 带疑问词的宾语从句 objective clause with interrogative ..
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appositive clause as subject complement
同位语从句作主语补语
以上为机器翻译结果，长、整句建议使用 人工翻译 。