fleet admiral
noun [ C ] uk/ˌfliːt ˈæd.mɪ.rəl/ us/ˌfliːt ˈæd.mɪ.rəl/
(also Fleet Admiral)（美国）海军五星上将
an officer of the highest rank in the US Navy
Fleet Admiral Nimitz/Chester Nimitz 海军五星上将尼米兹/切斯特•尼米兹
[ as form of address ] Yes, Fleet Admiral. 是的，上将！