1、读：[ˈɒstrɪtʃ]、美[ˈɑːstrɪtʃ]

2、鸵鸟：a very large African bird with a long neck and long legs, that cannot fly but can run very fast

3、(informal) 逃避现实的人；不愿正视现实者：a person who prefers to ignore problems rather than try and deal with them