refillable       
adjective uk/ˌriːˈfɪl.ə.bəl/ us/ˌriːˈfɪl.ə.bəl/
 (容器)可重新充装的
A container that is refillable can be filled again when the liquid inside has been used.
  Runners are encouraged to carry refillable water bottles. 鼓励跑步者携带可重复充装的水瓶。  
a refillable lighter 可重复充装的打火机