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

turn

a turn, times around something

turn; revolve / return; go back / (dated) Hui; Islam / time; occasion / Alternative form of 蛔 (kai, “roundworm; intestinal worm”)

episode, chapter / time, occasion / turn, round / (baseball, softball) inning

turn; turn around

one day

one, 1 / the first in order, foremost / the beginning / the best / a kind of; one of something / (card games) an ace / unity / the bottom string of a shamisen or other Japanese musical instrument

meeting / party; function

gathering; meeting / perceive; understand; comprehend / Alternative form of 絵 (e, “picture; drawing; painting”)