большая часть(of: A large portion of Republicans think Obama is a bigger threat than Assad, Putin or Ayatollah Khamenei; So we shouldn't be all that surprised when a poll reveals that a large portion of Republicans would support a military coup d'étatTaras)
часть документа(already produced, and the relevant portions of the documents shall be identified (by page and paragraph number) if the Government does not intend to rely on .. Alexander Demidov)
доля перестраховщиков(Доля перестраховщиков в = reinsured portion of. ... the difference between the opening and closing balances on gross technical reserves, and the reinsured portion of the reserves. | The reinsured portion of the reserves for losses is estimated in a manner consistent with the estimation of reserves for losses on the policies ... | the reinsured portion of the reserves for outstanding claims allocated in accordance with the treaty arrangements for the class of business in question. Alexander Demidov)