形容词compulsory
形容词
1. optional
1. It is optional with you.
那是你的自由。
2. Attendance at the lecture is optional.
这一讲座可随意参加。
3. Is English an optional lesson, or does everyone have to learn it?
英语是选修课还是每个人必修的课程？
1. 可选择的；非强制的
If something is optional, you can choose whether or not you do it or have it.
e.g. A holiday isn\'t an optional extra. In this stressful, frantic world it\'s a must...
休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。
e.g. Sex education is a sensitive area for some parents, and thus it should remain optional.
性教育对某些家长而言是个敏感领域，因此应该保持其非强制性。
1. 可选择的；非强制的
If something is optional, you can choose whether or not you do it or have it.
e.g. A holiday isn\'t an optional extra. In this stressful, frantic world it\'s a must...
休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。
e.g. Sex education is a sensitive area for some parents, and thus it should remain optional.
性教育对某些家长而言是个敏感领域，因此应该保持其非强制性。
