0 either of two children born to the same mother on the same occasion -- 双胞胎之一
1 used to describe two similar things that are a pair -- 成对的,成双的
twin towers 双子塔
his twin obsessions - women and cars 他的两大爱好——女人和汽车
2 If a town in one country is twinned with a town in another country, the two towns have a special relationship. -- 与…结成姐妹城
Cambridge is twinned with Heidelberg. 剑桥和海德堡结成了姊妹城。
Meeting a twin brother I didn't know I had was an unnerving experience.
Whilst the fetal abdominal circumference is the best parameter to assess fetal size in singleton gestations this is less reliable in twins.
Heritability of irritable impulsiveness : a study of twins reared together and apart.
The inheritance of neuropsychological dysfunction in twins discordant for schizophrenia.