A US military helicopter has gone down northwest of Baghdad with Sunni insurgents tied to Al-Qaeda claiming responsibility. All seven aboard the Marine Sea Knight Chopper were killed.是什么意思_A US military helicopter has gone down northwest of Baghdad with Sunni insurgents tied to Al-Qaeda claiming responsibility. All seven aboard the Marine Sea Knight Chopper were killed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句