等比级数

geometric series (such as 1+2+4+8+...)

class / rank / grade / equal to / same as / to wait for / to await / et cetera / and so on / et al. (and other authors) / after / as soon as / once

geometric (of mathematical sequences or progressions)

Belgium / Belgian / abbr. for 比利時|比利时[Bi3 li4 shi2]

euphemistic variant of 屄[bi1]

to compare / (followed by a noun and adjective) more {adj.} than {noun} / ratio / to gesture / (Taiwan pr. [bi4] in some compounds derived from Classical Chinese)

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