hold up 和 hold back 的具体区别

hold up指用暴力或武力威胁抢劫,有明确目的hold back扣住,保留抑制的意思1. hold up常表示下列意义：1) 延迟,阻碍My application was held up by the postal strike.2) 搀扶；支撑；举起；抬起He held up his hand t...