不知

bù zhī

not to know

Example Sentences

她全神贯注地看着手中的小说,不知不觉天色已经完全黑了。

tā quán shén guàn zhù dì kàn zhuó shǒu zhōng de xiǎo shuō, bù zhī bù jué tiān sè yǐ jīng wán quán hēi le.

She was concentrating on the novel in her hand, and before she knew it, it was completely dark.

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