billionairen.
英 bɪljə'neə | 美 ,bɪljə'nɛr
中文n. 亿万富翁
词根词源
billionaire (n.)1844, American English, from billion on model of millionaire. The first in the U.S. likely was John D. Rockefeller (1839-1937), some time after World War I.
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