单词：high-temperature chemistry of ceramic material
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Costa Rica, 1986. 30 years after Doctor Cur's fateful African trip, graduate students from the University of Miami are on a field trip exploring caves. Moving ahead of the group, 24-year-old Inn-Saing Ooi climbs into a deep crevasse . He's not alone.
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Now, its time for Words and Their Stories from VOA Learning English. Spring is in the air! Well, at least, in half of the world. The amount of daylight in the northern half is increasing, day by day. And air temperatures are slowly rising. Spring is
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Some bees once built a fine honeycomb in a hollow tree-trunk．Now there are two kinds of bees in a hive：worker bees，who gather pollen and make honey all their lives，and drones，who lie lazily in the hive all day long doing nothing．It happen
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上一次我们讲了三个带有bird这个词的习惯用语。它们是: bird brain。 Bird brain指没头脑、愚蠢的人和early bird special。 Early bird special是给早来顾客的特价优惠。还有strictly for the birds。 Strictly for
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Todd: OK, Mike, I was wondering, you're from Canada, and you have lived in America, and we work together, and in our company everybody is American but you, so how would you say Canadians are different than Americans? Mike: Well, first of all, I'll ju
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SCOTT SIMON, HOST: A swarm of potential stingers were unleashed on Washington, D.C., this week. This is not a political statement. A swarm of bees from one of the two hives atop NPR headquarters buzzed over the streets as they followed their queen ou
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