• adj. 强制的；托管的；命令的
• n. 受托者（等于mandatary）

来自mandate,命令。即命令的，引申词义强制的，法定的。

mandatory (adj.)

1570s, "of the nature of a mandate," from Late Latin mandatorius "pertaining to a mandator," from Latin mandatus, past participle of mandare (see mandate (n.)). Sense of "obligatory because commanded" is from 1818.

1. In a case of premeditated murder a life sentence is mandatory.

蓄意杀人依法要判无期徒刑。

来自柯林斯例句

2. 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。

来自《权威词典》

3. Is the appointment of worker - directors to be mandatory?

工人董事的任命是不是强制性的?

来自《简明英汉词典》

4. Attendance is mandatory.

务必参加。

来自辞典例句

5. Attendance at the meeting is mandatory.

出席会议是必要的

来自辞典例句