remarriage       
noun [ C or U ] (also re-marriage) uk/ˌriːˈmær.ɪdʒ/ us/ˌriːˈmer.ɪdʒ/
 再婚
the act or occasion of marrying again, or the state of being married again
  Her father's remarriage meant that she now had a stepmother. 她父亲的再婚意味着她现在有了继母。 
 Less than a year passed between her divorce and her re-marriage. 她离婚后不到一年就再婚了。 
 Remarriages do not generally last as long as first marriages. 再婚通常不会像第一次婚姻那样持续那么久。 
  - More examples
 - He was astonished by his mother's sudden remarriage.
 - The remarriage rate for divorced women is extremely high.
 - After her remarriage, she moved with her family from London to New York.
 - He was rarely out of the headlines that summer on account of his drunken antics and his re-marriage to his ex-wife.