| 单词 | crack |
|---|---|
| 音标 | [kræk] |
| 解释 | n.爆裂声；裂缝；v.裂开；破解，破译 |
| 红宝书 | 【英】 n. 裂缝, 裂纹(line along which sth has broken) 【例】 a cup with bad cracks in it |
| 字源 | crack (v.) Old English cracian "make a sharp noise," from Proto-Germanic *krakojan (cognates: Middle Dutch craken, Dutch kraken, German krachen), probably imitative. Related: Cracked; cracking. To crack a smile is from 1840s; to crack the whip in the figurative sense is from 1940s. crack (n.) "split, opening," 14c., from crack (v.). Meaning "try, attempt" first attested 1836, probably a hunting metaphor, from slang sense of "fire a gun." Meaning "rock cocaine" is first attested 1985. The superstition that it is bad luck to step on sidewalk cracks has been traced to c.1890. Adjectival meaning "top-notch, superior" (as in a crack shot) is slang from 1793. |
| 不择手段背单词 | n. 断裂(声) = fissure; 裂缝, 裂纹 【记】源于break |
| 趣味全助记 | 【记】音：磕 + rock 磕了一块石头，发出爆裂的声音；break的声音 【相关】cracker 爆竹 |
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