mandatory
adjective /ˈmændətəri/, /mænˈdeɪtəri/
/ˈmændətɔːri/
(formal)- required by law
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。
Collocations DictionaryMandatory is used with these nouns:- attendance
- embargo
- evacuation
- …
词源late 15th cent.: from late Latin mandatorius, from Latin mandatum ‘something commanded’. - The offence carries a mandatory life sentence.