例句與造句

1. :A few days ago on Bargain _ Hunt a manual vacuum cleaner appeared.
2. According to " Thomas'Register of American Manufacturers ", sales of manual vacuum cleaners peaked in 1914.
3. The "'manual vacuum cleaner "'was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar in use to a manual lawn mower.
4. It's difficult to find manual vacuum cleaners in a sentence. 用manual vacuum cleaners造句挺難的