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SCIENCE IN THE NEWS - November 26, 2002: Dental Health By Nancy Steinbach VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abo...
At the Dental clinic在牙医诊所 Bonny: Doctor, I'd like to have a check-up on my teeth. Doctor: Hi, Bonny. You haven't been here for over a year. Bonny: Oh, that long? I thought it was only one mo...
07 牙病的预防与治疗 DATE=2-27-01 TITLE=SCIENCE IN THE NEWS #2113 - (1)Dental Health BYLINE=Nancy Steinbach VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with Science in the...