Backed by air support, U. S. tanks rolled through the city, sector by sector in the largest coalition-led operation in the Sunni triangle in the past several months.是什么意思_Backed by air support, U. S. tanks rolled through the city, sector by sector in the largest coalition-led operation in the Sunni triangle in the past several months.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句