dotting the i's and crossing the t's

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

successive series of questions and responses

one part

Used other than figuratively or idiomatically: see 一 and 本 (one thing) / Short for 一本勝ち (ippon-gachi, “winning in one blow”).

the first / (mathematics, attributive) the quality of being first-degree

a night

solely / only, simply / alone, automatically, by itself, naturally

a female given name

a male given name