required by law synonym compulsory强制的;法定的;义务的 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
- …
Word Originlate 15th cent.: from late Latin mandatorius, from Latin mandatum ‘something commanded’.