v.意外地碰到，偶遇，撞上，与…相撞...

Don't back up the moment you run up against a little difficulty.不要遇到一点困难就打退堂鼓.This is one of the most puzzling cases I have ever run up against.这是我经手的最难办的案件之一.When our principles run up against our interests, which ...

run up against的音标：run up against的英式发音音标为：[rʌn ʌp ə'ɡenst]run up against的美式发音音标为：[rʌn ʌp ə'ɡenst]...