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Sentence examples
他究竟在等什么就不得而知了
tā jiūjìng zài děng shénme jiù bùdéérzhī le
it's not clear what he's waiting for
到底是谁写的就不得而知了
dàodǐ shìshuí xiě de jiù bùdéérzhī le
who actually wrote it is unable to find out
这就不得而知了
zhè jiù bùdéérzhī le
it's unable to find out
