same-sex marriage       
noun [ C or U ] uk/ˌseɪm.seks ˈmær.ɪdʒ/ us/ˌseɪm.seks ˈmer.ɪdʒ/
 同性婚姻
marriage between two people of the same sex
  Episcopal priests can officiate at same-sex marriages. 圣公会的牧师可以主持同性婚姻。 
 She's against same-sex marriage. 她反对同性婚姻。