every so often片语KK [ˋɛvɚi so ˋɔfən] /ˈɛvɚi soʊ ˈɔfən/发音片语1偶尔、不时、时不时She still calls her old teacher every so often.她偶尔还是会打电话给以前的老师。用这个字练口说→