australia的形容词形式是Australian;
Australian
adj.澳大利亚的;
n.澳大利亚人;
复数: Australians
The Australian in lane four is coming up fast from behind.
第四道的澳大利亚运动员正从后面快速追赶上来。
She's Italian by birth but is now an Australian citizen.
她生于意大利,但现在是澳大利亚公民。
She spoke with a strong Australian accent.
她说话带有浓重的澳大利亚口音。