fell down 和fell off2者有何分别?最好有例子～
问题描述：
fell down 和fell off
2者有何分别?
最好有例子～
答
fall off:To become less; decrease (变少；降低)例如：Stock prices have fallen off.The number of staff meetings fell off after a few months.（股票价格下降了.工作人员的会议在几个月后减少了.）fall down:To...