xì shǔ
count-down
breakdown
to list
to enumerate
to run through
xī shū
sparse
infrequent
thinly spread
xī shù
all
every single one
the entire sum
xī shǔ
to enumerate in detail
to explain clearly
xǐ shù
to wash the face and rinse the mouth
xì shù
coefficient
factor
modulus
ratio