required
英[rɪ'kwaɪəd]
美[rɪ'kwaɪrd]
- adj. 必需的；（美）必修的
- v. 需要（require的过去式及过去分词形式）；要求
英英释意
- 1. necessary for relief or supply;
- "provided them with all things needful"
- 2. required by rule;
- "in most schools physical education are compulsory"
- "attendance is mandatory"
- "required reading"