抽象代数学: (mathematics) abstract algebra

七七日: the forty-ninth day after a person dies; the Buddhist memorial service that occurs forty-nine days after a person dies

osmium, Os

to live in, to inhabit, to abide at, to dwell at

springtime haze

finish, be complete / do with, manage with

a male given name

become clear, become transparent / (impersonal) for the weather to clear up / (impersonal) for sound to become clear / for emotions to become tranquil

I'm sorry; excuse me

smooth (without difficulty)