nán yǐ
hard to (predict, imagine etc)
nán yǐ zhì xìn
hard to believe
incredible
nán yǐ shí xiàn
hard to accomplish
difficult to achieve
nán yǐ rěn shòu
hard to endure
unbearable
nán yǐ qǐ chǐ
to be too embarrassed to mention sth (idiom)
to find it hard to speak about sth
nán yǐ lǐ jiě
hard to understand
incomprehensible
nán yǐ zhuō mō
elusive
hard to pin down
enigmatic
nán yǐ yìng fù
hard to deal with
hard to handle
nán yǐ mǒ qù
hard to erase
ineradicable
nán yǐ hàn dòng
unsusceptible to change
deeply entrenched
nán yǐ zī yǐ
cannot control oneself (idiom)
to be beside oneself