单词	The wheel has come off
释义	The wheel has come off. 轮子掉下来了。
随便看	hierarchic network hierarchic opposition Hierarchic Organization hierarchic parallel hierarchic rank hierarchics hierarchic sequence hierarchic sequential hierarchic sequential access method hierarchic sequential access methodHSAM hierarchic sequentialHSorganization hierarchic sequential organization hierarchic structure hierarchic structures hierarchic switching network hierarchic synchronized network hierarchic system hierarchic system of physical regionalization hierarchic-teaching Hierarchie hierarchieal arehitecture hierarchieal handover hierarchieal timed colored Petri net Hierarchies Hierarchies and clusters