renewable
adjective uk/rɪˈnjuː.ə.bəl/ us/rɪˈnuː.ə.bəl/
C1 （能源）可再生的
Renewable forms of energy can be produced as quickly as they are used.
renewable energy sources such as wind and solar power 诸如风能和波浪能之类的可再生能源
C2 可延长有效期的;可展期的
If an official document is renewable, its use can be continued for an extra period of time.
a renewable passport/contract 可延期护照／可续签的合同