一、澳大利亚国旗：长方形，长宽之比为2：1。
The ratio of length to width of the Australian flag is 2:1.
二、左上角为大不列颠及北爱尔兰联合王国国旗，表明澳大利亚联邦与英国的传统关系。
The upper left corner is the flag of the United Kingdom of Great Britain and Northern Ireland, which indicates the traditional relationship between the Commonwealth of Australia and the United Kingdom.
三、靠旗杆侧上角有英国米字旗，靠旗杆侧下部有一颗白色的七角星。
On the upper corner of the flagpole there is a British meter-shaped flag and on the lower side there is a white heptagonal star.
四、最大的一颗七角星代表的是澳大利亚联邦的六个州与一个区，蓝色象征着大海环抱着澳大利亚联邦领土。
The largest seven-pointed star represents six states and one region of the Commonwealth of Australia. Blue symbolizes the sea encircling the territory of the Commonwealth of Australia.
五、由英国国王爱德华七世在1904年选定的。
Selected by King Edward VII of England in 1904.
参考资料来源：百度百科-澳大利亚国旗
