About
HSK levels

    除非

    chúfēi

    1. only if (..., or otherwise, ...); only when; only in the case that
    2. unless

    除非你有很好的理由,否则我不会同意。 Chúfēi nǐ yǒu hěn hǎo de lǐyóu, fǒuzé wǒ búhuì tóngyì.