Clearly, this is not the first time for the US navy has conducted surveillance in that area of the South China Sea, as the Pentagon said the Impeccable was conducting routine operations.是什么意思_Clearly, this is not the first time for the US navy has conducted surveillance in that area of the South China Sea, as the Pentagon said the Impeccable was conducting routine operations.在线翻译_英语_读音_用法_例句