run into撞上，偶然碰见...run off复印，打印...run out of用完，用尽，耗尽

run into 偶然碰见；遭遇(困难等)；共计，达到…之多；撞在…上...run off 很快写出；复印出，印出；跑掉，逃掉...run over 在…上驶过，(撞倒并)碾过；把…很快地(或粗略地)过一遍

run away 跑开；迅速离开；逃走...run off 跑掉；迅速离开...run out of （贮存物、供应品等）用尽；缺乏

run off at the mouth 信口开河...run off 逃跑...run on 抢购