| 单词 | compulsory |
| 释义 | compulsory adj. 1. required by law or a rule (it is compulsory to keep dogs on leads). 2. essential; necessary. Phrases and idioms compulsory purchase the enforced purchase of land or property by a local authority etc., for public use. Derivatives compulsorily adv. compulsoriness n. Etymology: med.L compulsorius (as compel) |
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