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mandatory

adjective
 
🔊/ˈmændətəri/, 🔊/mænˈdeɪtəri/
🔊/ˈmændətɔːri/
(formal)
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  1. required by law强制的；法定的；义务的 synonym compulsory
    • The offence carries a mandatory life sentence.这种罪行依照法律要判无期徒刑。🔊🔊
    • mandatory (for somebody) (to do something) It is mandatory for blood banks to test all donated blood for the virus.血库必须检查所有捐献的血是否含有这种病毒。🔊🔊
    Oxford Collocations DictionaryMandatory is used with these nouns:
    • attendance
    • embargo
    • evacuation
    • …
    See full entry
    Word Originlate 15th cent.: from late Latin mandatorius, from Latin mandatum ‘something commanded’.