compact       
 adjective uk/kəmˈpækt/ us/kəmˈpækt/
 紧凑的;密实的;小巧的
consisting of parts that are positioned together closely or in a tidy way, using very little space
  compact soil/sand 密实的土壤/沙子 
 a compact camera/bag 小巧的相机/提包 
 What a compact office! How did you fit so much into so little space? 多么小的办公室!你们是如何把这么多东西塞进这么小的空间的? 
 compact  
 noun [ C ] uk/ˈkɒm.pækt/ us/ˈkɑːm.pækt/
  (CASE)      
  (装女性扑面用香粉的)带镜粉盒
a small, flat case that contains women's face powder
  a powder compact 粉盒 
   (CAR)     
  US小型汽车 
a small car
   (AGREEMENT)      
 formal合约;契约;协定 
a formal agreement between two or more people, organizations, or countries
  [ + to infinitive ] They made a compact not to reveal any details. 他们互相约定不透露任何细节。 
 compact       
verb [ T ]  formal uk/kəmˈpækt/ us/kəmˈpækt/
 压缩;把…压密实;把…压紧
to press something together in a tight and solid way
  Cars had compacted the snow until it was like ice. 汽车把雪碾得越来越实,直到变得像冰一样。