甘于

to be willing to / to be ready to / to be content with / accepting (of restriction, sacrifice, risk etc)

surname Gan / abbr. for Gansu Province 甘肅省|甘肃省[Gan1 su4 Sheng3]

sweet / willing

to go / to take / sentence-final interrogative particle / variant of 於|于[yu2]

(of time or place) in; at; on / (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for / (indicating a source) from; out of / (used in comparison) than / (used in the passive voice) by

unwilling to accept / not content with (a subservient role, a mediocre result etc)