twin

a. like twins in resemblance,perfectly resembling像孪生子那样相似的，完全相似的。
△Tw.5.1.233 (223):“An apple,cleft in two,is not more twin / Thanthese two creatures.”一个苹果切成两半，也不比这两个人更为相像。

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twin

vb. be born at the same birth孪生。
△Oth.2.3.213 (211): “And he that is approved in this offence,/Though he had twinned with me,both at a birth,/Shall lose me.”谁若是被证明该担当这次罪责，哪怕他和我是孪生同胞，我也不放过他。

twin[twin]

adj.成对的，一对的
‖ twin antenna 成对天线
twin brothers 孪生兄弟
twin center-halves 双中前卫
twin contingencies 成对的偶然性
twin flight 双机飞行
twin killing 双杀，孪生（的）/twin necessities 成对的必然性
twin paradox（相对论）孪生悖论
twin possibilities 成对的可能性，相似的，孪生的
twin set 套装毛衣
twin studies 孪生儿童研究 twinbom n. 双座飞行器