every so often是什么意思

every so often的音标：every so often的英式发音音标为：['evri səʊ 'ɔfən]every so often的美式发音音标为：['ɛvri soʊ 'ɔfən]...

You're bound to mistime a tackle every so often.有时候你肯定会错估铲球的时机。Every so often he would turn and look at her.他会时不时回头看她一眼。Every so often the horse's heart and lungs are checked.不时检查那匹马的心脏和肺。...