mandatory /ˈmændəˌtori/ Brit /ˈmændətri/ adjective /ˈmændəˌtori/ Brit /ˈmændətri/
adjective
Learner's definition of MANDATORY
: required by a law or rule法定的；规定的：强制性的 -
This meeting is mandatory for all employees. [=all employees must go to this meeting]所有雇员都必须参加这次会议。
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The mandatory fine for littering is $200. [=everyone caught littering must pay $200]乱扔垃圾要罚款200美元。
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a mandatory retirement age [=an age at which workers are required to retire]法定退休年龄
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a mandatory drug test强制性的药检