| 单词 | compulsory |
| 例句 | compulsory adjective •the wearing of seat belts is compulsory:obligatory, mandatory, required, requisite, necessary, essential | imperative, unavoidable, enforced, demanded, prescribed. ANT optional. |
| 随便看 |
英语同义词词典收录了14896条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。