不知道他什么时候才回来。

I don't know when he'll come back.

Traditional

不知道他什麼時候才回來。

Pinyin

Bù zhīdào tā shénme shíhou cái huílai.

Bopomofo

ㄅㄨˋ ㄓ ㄉㄠˋ ㄊㄚ ㄕㄣˊ ˙ㄇㄜ ㄕˊ ˙ㄏㄡ ㄘㄞˊ ㄏㄨㄟˊ ˙ㄌㄞ。

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

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