In mathematics, cousin primes are prime numbers that differ by four. Compare this with twin primes, pairs of prime numbers that differ by two, and sexy primes, pairs of prime numbers that differ by six.
双语例句
1
Summer was already past its prime, when Edgar reluctantly yielded his assent to their entreaties, and Catherine and I set out on our first ride to join her cousin.
当埃德加勉强答应了他们的恳求时，盛夏差不多过了，凯瑟琳和我头一回骑马出发去见她的表弟。
2
The emir's prime minister, Hamad bin Jassem al-Thani, is a cousin.
卡塔尔首相埃哈马德?本?贾西姆?本?贾布尔·阿勒萨尼是现任埃米尔的表兄弟。
3
An ancestor was a British Prime-minister Lord John Russell and I am a cousin of Bertrand Russell - although the only thing I remember about him as a child was going to his 90th birthday party.