一卡通

the name of various contactless smartcards, notably Yikatong (mainly for public transport in Beijing) and iPASS (mainly for public transport in Taiwan)

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

to stop / to block / (computing) (coll.) slow / (loanword) card / CL:張|张[zhang1],片[pian4] / truck (from "car") / calorie (abbr. for 卡路里[ka3 lu4 li3]) / cassette

to block / to be stuck / to be wedged / customs station / a clip / a fastener / a checkpost / Taiwan pr. [ka3]

cartoon (loanword)

to go through / to know well / (suffix) expert / to connect / to communicate / open / to clear / classifier for letters, telegrams, phone calls etc

classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)