| 单词 | surd |
| 释义 | surd /serrd/, adj. 1. Phonet. voiceless (opposed to sonant). 2. Math. (of a quantity) not capable of being expressed in rational numbers; irrational. n. 3. Phonet. a voiceless consonant (opposed to sonant). 4. Math. a surd quantity. [1545-55; < L surdus dull-sounding, mute, deaf] |
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