1. An excellent understanding of English would be mandatory. 必须具有极好的英语理解能力。
2. While the expensive test is optional, critics fear it would be viewed as mandatory by those hoping to join family members in France. 虽然这项昂贵的测试是可选择的，但批评家担心它会被那些在法国希望组建家庭的人认为是强制的。
3. You want a specific user profile to be mandatory, but you cannot find an option in Control Panel where you can configure this. How should you do this? 你想要把一个特定的用户配置文件设为*，但你无法在“控制面板”的选项中找到可以配置的地方。你该怎么做？
英英解释
n.
1. the recipient of a mandate
2. a territory surrendered by Turkey or Germany after World War I and put under the tutelage of some ot adj.
1. required by rule
