彼一時此一時

that was one thing, and this is another / times have changed

that / those / (one) another

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

a period of time / a while / for a short while / temporary / momentary / at the same time

o'clock / time / when / hour / season / period

this / these

this; these