mandatory

• 形容根据法律、规则或规定必须做到的事情；具有强制性或义务性的。

Describes something that is required by law or rules; compulsory.

1. Required by rule or lawB2formal

   Something that must be done because of a rule, law, or regulation.

   强制性的

   • Wearing a seatbelt is mandatory in most countries.
   • The training session is mandatory for all new employees.
   • Attendance at the safety briefing is mandatory.

   同义词bindingcompulsoryimperativeobligatoryrequiredrequisitestatutory

   反义词discretionaryelectiveoptionalpermissivevoluntary

• 名词，指获得授权或委任的个人、组织或机构；也指第一次世界大战后由国际联盟委托某一战胜国管理的原敌国领土（委任统治地）。

A noun referring to a person or entity that receives a mandate, or a territory placed under the administration of another power after World War I.

1. Recipient of a mandateC1formallegal

   An individual or entity that is formally entrusted with certain powers or responsibilities on behalf of another party or authority.

   受托人

   • The mandatory was appointed to oversee the administration of the colony.
   • Under the treaty, the mandatory assumed full authority over the region's foreign affairs.
   • The court ruled that the mandatory had acted within the scope of its delegated powers.

   同义词agentdelegatemandataryproxyrepresentative

2. Territory under a League of Nations mandateC1formalpolitical

   A former colony or territory that was placed under the supervision of a European power after World War I until it could govern itself.

   委任统治地

   • Palestine was a British mandatory from 1920 until 1948.
   • The mandatory system was intended to prepare territories for eventual independence.
   • Several African mandatories were later transformed into United Nations trust territories.

   同义词mandate