单词:artificial conditioned connection
单词:artificial conditioned connection 相关文章
Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Bruce Gulland. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 It is winter in the United Kingd
Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? 有件事情我们总觉得理所当然:室温下把一些冰块放入水中,
More than 300 scientists from 14 countries brought their skills to the Greenland base camp over five summers. Jim White studies really old ice. He thinks it will help predict what the climate will be like in the future. White is director of the Insti
At the teachers' meeting, Raymond said, It's summer time, but my students are freezing. You could hang beef in my classroom. My students come from the hot, humid summer air into my icy classroom. The temperature change is making some of them sick. Th
Voice 1 Thank you for joining us for todays Spotlight program. Im Joshua Leo. Voice 2 And Im Rebekah Schipper. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voi
Harbin, the capital of Heilongjiang province on the edge of Siberia, is one of China's coldest places. And when the temperature dips below minus 20 degrees Celsius, the city turns into a wonderland with the creation of castles, towers, and buildings