rears its head 同义词
1 发生
up be get fall occurrence onset come start run leave result cause happen effect present force pass stage occur realize arrive occasion arise enact materialize transpire instigate actualize effectuate come about that come down the pike rears its ugly head go on come up go ahead take place go down go off come off play out come about give rise to come to pass crop up
2 出现
present out up around appear appearance presence occurrence advent visitation stirring make take start show form happen develop produce walk stage raise occur born arise emerge sprout heave into sight heave into view rears its ugly head come out open up show up come along play out come to pass crop up