英语释义
1
n. United States industrialist who manufactured vacuum cleaners (1849-1932)
2
n. United States lawyer who was director of the FBI for 48 years (1895-1972)
3
n. 31st President of the United States; in 1929 the stock market crashed and the economy collapsed and Hoover was defeated for reelection by Franklin Roosevelt (1874-1964)
4
n. a kind of vacuum cleaner