to improve one's position, typically in a career or personal growth
キャリアや個人的成長の中で、位置を改善すること (kyaria ya kojinteki seichō no naka de, ichi o kaizen suru koto)
"He started at the bottom of the company and has been climbing the ladder ever since."
"彼は会社の底辺から始めて、それ以来ずっと階段を登っている。" (Kare wa kaisha no teihen kara hajimete, sore irai zutto **kaidan o nobotte iru**.)
to do something while waiting
to combine one thing with others
a fundamental change in approach or underlying assumptions
to start working hard on something
to be ready to take over or step in when needed
people cannot change their basic character or nature
