BortnikovEconomist⁵³⁵⁸¹⁺¹ 基本例句 博尔特尼科夫¹⁰⁰ Alexander Bortnikov, head of the Russian security service, was careful to identify the sources of the Moscow bombing as the north Caucasus, not Chechnya. 俄罗斯安全部部长亚历山大•博尔特尼科夫小心谨慎的寻找莫斯科爆炸的源头，确认是北高加索，而非车臣应对此负责。 ecocn