successive series of questions and responses

vicissitudes, the way that the world or a person prospers one day and declines the next

You should treasure every encounter, for it will never recur.

ditto mark (〃)

three-dot ellipsis: …

break-even point

(typography) either of the iteration marks 〱 and 〲, respectively used to repeat more than one 清音 (seion) and 濁音 (dakuon) in vertical text, as well as their decomposed counterparts, 〳, 〴 and 〵

handstand

(typography) the iteration mark 々, used to repeat kanji

(typography) the iteration mark 〻, used to repeat kanji, historically mostly kanji with kun'yomi