in ancient stories, an imaginary bird that set fire to itself every 500 years and was born again, rising from its ashes (= the powder left after its body has been burned)

The town was bombed but was then rebuilt and rose from the ashes like a/the phoenix (= was just as good as before). 饱受轰炸的城镇得到了重建，就像凤凰涅槃重生一样。

the capital and largest city of the southwestern US state of Arizona

He returned to Phoenix in mid-September. 他于9月中旬回到凤凰城。

The laboratories are in Phoenix, Arizona. 实验室位于亚利桑那州的凤凰城。