| 词汇 | obtuse |
| 词根词缀 | 词源： c.1500, from M.Fr. obtus (fem. obtuse), from L. obtusus "blunted, dull," pp. of obtundere "to beat against, make dull," from ob "against" + tundere "to beat," from PIE *(s)tud- "to beat, strike, push, thrust" (cf. L. tudes "hammer," Skt. tudati "he thrusts"). Sense of "stupid" is first found c.1500. 词根记忆： 钝的;愚蠢的(ob+tuse可能来自use→不能用了→钝的)[ob-表示"逆,倒,加强意义"] |
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