记忆方法
1. Obtuse：我不会吐丝，而别的蚕都吐——笨的、钝角的
2. 这也是为什么 obtuse angle，obtuse triangle 被翻译为钝角和钝角三角形的原因。
2. 这也是为什么 obtuse angle，obtuse triangle 被翻译为钝角和钝角三角形的原因。
中文词源
obtuse 迟钝的，愚蠢的
来自obtund,使迟钝，-s,过去分词后缀。引申词义迟钝的，愚蠢的。
英语词源
- obtuse
-
obtuse: [16] The etymological meaning of obtuse is ‘beaten down, blunted’. It comes from Latin obtūsus, the past participle of obtundere, a compound verb formed from the prefix ob- ‘against’ and tundere ‘beat’ (source of English contusion and related to toil). The notion of being ‘dulled’ or ‘blunted’ led to its being used for ‘having dulled wits, stupid’, and the idea of bluntness also lies behind its geometrical use for an angle of more than 90 degrees (as contrasted with the ‘sharp’ acute angle).
=> contusion, toil - obtuse (adj.)
- early 15c., "dull, blunted," from Middle French obtus (fem. obtuse), from Latin obtusus "blunted, dull," also used figuratively, past participle of obtundere "to beat against, make dull," from ob "against" (see ob-) + tundere "to beat," from PIE *(s)tud-e- "to beat, strike, push, thrust," from root *(s)teu- "to push, stick, knock, beat" (cognates: Latin tudes "hammer," Sanskrit tudati "he thrusts"). Sense of "stupid" is first found c. 1500. Related: Obtusely; obtuseness.
权威例句
- 1. I'm a limited and obtuse clergyman while you're the expert.
- 你是专家，而我是个能力有限的愚笨牧师。
- 2. Are you being deliberately obtuse?
- 你是不是故意装傻？
- 3. You were too obtuse to take the hint.
- 你太迟钝了,没有理解这种暗示.
- 4. Two opposite corners of this rhomb contain three obtuse angles of 101°95'.
- 菱面体的两个对顶包含着三个101°95'的钝角。
- 5. I've really been very obtuse and stupid.
- 我实在笨得不可理喻。
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