unexpectedly       
adverb uk/ˌʌn.ɪkˈspek.tɪd.li/ us/ˌʌn.ɪkˈspek.tɪd.li/
B2 出乎意料地,想不到地
in a way that is not expected
  Their campaign was unexpectedly successful. 他们的竞选出人意料地成功。 
 She showed up unexpectedly at the match. 她出人意料地出现在比赛场。 
 See: unexpected
 - More examples
- He went on holiday to Spain, where he died unexpectedly.
- Her request won an unexpectedly large amount of support.
- He retired unexpectedly from work in July.
- Unexpectedly, nobody complained.