bù dǒng
not to understand
cannot (see, hear, understand, as verb complement)
incomprehension
bù dǒng zhuāng dǒng
to pretend to understand when you don't
nòng bu dǒng
unable to make sense of (sth)
gǎo bu dǒng
unable to make sense of (sth)
kàn bu dǒng
unable to make sense of what one is looking at
tīng bu dǒng
unable to make sense of what one is hearing