“Mandatory”是一个英文单词，中文含义是“强制性的，命令的，义务的”。以下是三个中英文例句：

It is mandatory for all employees to participate in the company's training program. 强制所有员工参加公司的培训计划。

The government has made wearing a helmet mandatory for all cyclists. 政府规定所有骑自行车的人必须戴头盔。

Attendance at the meeting is mandatory for all members. 所有成员必须参加会议。