vi. 用真空吸尘器打扫

1. United States industrialist who manufactured vacuum cleaners (1849-1932)

<noun.person>

2. United States lawyer who was director of the FBI for 48 years (1895-1972)

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3. 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)

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4. a kind of vacuum cleaner

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1. clean with a vacuum cleaner

<verb.contact> vacuum vacuum-clean
vacuum the carpets