从事K12教育行业多年
fall[fɔ:l]
v.落下,倒下,来临
落下falldrop(height)alightdownfallfallingfellecptomaincidenceplungedevolution
倒下collapsefalldownfelldownfellfallletdropbrodiefalling
来临approachcomeclosercomingfallcamecomeoncoming