洋洋自得

immensely pleased with oneself (idiom) / proud / complacent

ocean / vast / foreign / silver dollar or coin

vast / impressive / self-satisfied / immensely pleased with oneself

self / oneself / from / since / naturally / surely

contented / pleased with one's position

to obtain / to get / to gain / to catch (a disease) / proper / suitable / proud / contented / to allow / to permit / ready / finished

structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc

to have to / must / ought to / to need to