在巴西脊髓灰质炎实际上已经根除。Polio has been virtually eradicated in Brazil.脊髓灰质炎疫苗挽救了数以百万计的生命.The polio vaccine has saved millions of lives.1995年,已消灭脊髓灰质炎.By 1995 poliomyelitis had been totally eliminated....
Mist shrouded the outline of Buckingham Palace.雾霭蒙蒙，白金汉宫若隐若现。...the bright uniforms of the guards parading at Buckingham Palace.参加白金汉宫阅兵式的卫兵们色彩鲜艳的制服Dr. George Fieldman a lecturer in psychology at Buckingham Chilterns Uni...
Physical Properties - When freshly distilled, citral is an almost colorless oil possessing a characteristic lemon odor.新蒸馏出来的柠檬醛是一种几乎无色的油状液体,具有特征的柠檬香气.It is distilled by the sun, kneaded by the moon.日光把它蒸腾,月华把它荡漾.A skin ...
Inter - satellite ranging is crucial in Gravisat and autonomous navigation.星间测距是重力测量卫星和卫星自主导航的关键技术....Barcelona, capital of the autonomous region of Catalonia.加泰罗尼亚自治区首府巴塞罗那In the 8 th century, tribal duchies emerged in ...