单词	800 number
释义	800 number800 num·ber /eɪtˈhʌndrəd ˌnʌmbə $ -bər/ (also 800 line, toll-free number American English) noun a telephone number which one can telephone without paying for the call
随便看	urine Uris, Leon URL urn urological urologist urology Ursa Major Ursa Minor Uruguay Uruguayan US us USA usable USAF usage USAID USA Today USB USB drive USCIS U.S. Customs and Border Protection USDA use

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