我不知道他的姓。

I don't know his last name.

Pinyin

Wǒ bù zhīdào tā de xìng.

Bopomofo

ㄨㄛˇ ㄅㄨˋ ㄓ ㄉㄠˋ ㄊㄚ ˙ㄉㄜ ㄒㄧㄥˋ。

This sentence is from Tatoeba, contributed by McMeao, with the English translation by Hybrid. It is used here under CC BY 2.0 FR.

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