out-
/aʊt/prefix
1
- to the point of surpassing or exceeding表示“超过”, “胜过”：
outfight
outperform
2
- external; separate; from outside表示“外”; “分离”; “来自外部”：
outbuildings
outpatient
3
- away from; outward表示“离开”; “向外”：
outbound
outpost