oppress与suppress这两个动词均有“压迫，镇压”之意。

oppress : 指用武力或权力等压迫、压制别人。

• The regime is accused of oppressing religious minorities.
  人们指控这个政权压迫少数宗教信徒。
• The gloomy atmosphere in the office oppressed her.
  办公室的低沉气氛使她感到郁闷。

suppress : 通常指通过强力，迅速有力地制止某事，或用意志控制自己的感情。

• The rebellion was brutally suppressed.
  起义遭到了残酷的镇压。
• to suppress a smile
  忍住没笑
• She was unable to suppress her anger.
  她按捺不住怒火。