| 单词 | callus |
|---|---|
| 音标 | ['kæləs] |
| 解释 | n. 老茧，胼胝 |
| 红宝书 | 无 |
| 字源 | callus (n.) "hardened skin," 1560s, from Latin callus, variant of callum "hard skin," related to callere "be hard," from PIE root *kal- (3) "hard" (cognates: Sanskrit kalika "bud," Old Irish calath "hard," Old Church Slavonic kaliti "to cool, harden"). |
| 不择手段背单词 | 无 |
| 趣味全助记 | 无 |
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