twin

twin
noun
  1. one of two children or animals born at the same birth
    孪生子之一；双胞胎之一
    ■a person or thing that is exactly like another
    两个非常相像的人（或物）中的一个
    there was a bruise on his cheek, a twin to the one on mine.
    他的面颊上有块瘀伤，和我的一模一样。
    ■(the Twins)the zodiacal sign or constellation Gemini
    双子星座
  2. something containing or consisting of two matching or corresponding parts, in particular
    成对，成双的东西，尤指
    ■a twin-bedded room
    （有一对单人床的）双人间
    ■a twin-engined aircraft
    双引擎飞机
    ■a twinned crystal
    孪晶体
adjective
  1. [attrib.]forming, or being one of, a pair born at one birth
    孪生的
    she gave birth to twin boys.
    她生了对双胞胎儿子。
    her twin sister.
    她的孪生姐妹。
    ■forming a matching, complementary, or closely connected pair
    孪生的，成对的，成双的
    the twin problems of economic failure and social disintegration.
    经济失败和社会解体这对孪生问题。
    ■(Botany)growing in pairs
    (植)双生的
    twin seed leaves.
    双生子叶。
    ■(of a bedroom) containing two single beds
    （卧室）有两张单人床的
    ■(of a crystal) twinned
    （晶体）孪晶的
(twinned, twinning)
  1. [with obj.](一般作 be twinned)(Brit.)link (a town or district) with another in a different country or cause (two towns or districts) to be linked, for the purposes of friendship and cultural exchange
    (英)（为友谊、文化交流目的而）结成姐妹城
    the Russian city of Kostroma is twinned with Durham.
    俄国的科斯特罗马市与达勒姆结为姐妹城。
    ■link; combine
    连接；联合
    the company twinned its core business of brewing with that of distilling.
    这家公司将其核心业务酿造和蒸馏联合起来。
语源
  1. late Old English twinn 'double', from twi- 'two'; related to Old Norse tvinnr. Current verb senses date from late Middle English
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