| 单词 | reciprocal |
| 释义 | reciprocal adj. & n. --adj 1. in return (offered a reciprocal greeting). 2. mutual (their feelings are reciprocal). 3. Gram. (of a pronoun) expressing mutual action or relation (as in each other). 4. inversely correspondent; complementary (natural kindness matched by a reciprocal severity). --n Math. an expression or function so related to another that their product is unity (1/2 is the reciprocal of 2). Derivatives reciprocality n. reciprocally adv. Etymology: L reciprocus ult. f. re- back + pro forward |
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