What is the meaning of èr?

Hanyu Pinyin reading of

Hanyu Pinyin reading of

Hanyu Pinyin reading of

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Hanyu Pinyin reading of

Hanyu Pinyin reading of

Hanyu Pinyin reading of

Hanyu Pinyin reading of

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Hanyu Pinyin reading of  /

Hanyu Pinyin reading of  /

Hanyu Pinyin reading of

Source: wiktionary.org