| 词汇 | sedative |
| 词根词缀 | 词源： sedative (adj.) "tending to calm or soothe," early 15c., from M.L. sedativus "calming, allaying," from pp. stem of sedare (see sedate). The noun derivative meaning "a sedative drug" is attested from 1785. 词根记忆： a. 镇静的(sed坐+ative)[-ative表形容词.有…倾向(性质)的"] |
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