Secretary of State John Kerry says __________________________________Mr. Kerry, who arrived Sunday in the Nigerian city of Lagos, spoke shortly after Nigerian troops repelled an attack by Boko Haram militants on the outskirts of the Borno state capital, Maiduguri. 国务卿约翰. 克里表示_________________________________克里先生周日抵达尼日利亚城市拉各斯并发表演讲.不久前,尼日利亚军队在博尔诺州首府迈杜古里市近郊击退了博科圣地武装分子的一次攻击.