一頃はやった歌が、最近またテレビで流れている。
A song that was popular at one time is being played on TV again lately.
一頃に比べると、この町もずいぶん静かになった。
Compared with how it once was, this town has become much quieter.
彼は一頃、毎晩のように飲み歩いていた。
For a while, he went out drinking almost every night.