有时once in a while详细»
有时at intervals;at some or other;at some time of other;at times;at whiles;every so often;once in a way;once in a while;there are time when详细»
有时at times;at whiles;between whiles;betweentimes;betweenwhiles;in some cases;occasionally;once in a way;sometimes详细»
有时at times;in some cases;once in a way详细»
有时occasionally;sometimes详细»
有时at times;in some cases;once in a way详细»