冪級數

power series (math.)

(math.) power; exponent / to cover with a cloth / cloth cover; veil

level / grade / rank / step (of stairs) / CL:個|个[ge4] / classifier: step, level

(math.) series

to count / to count as / to regard as / to enumerate (sb's shortcomings)

number / figure / several / CL:個|个[ge4]

frequently / repeatedly