单词：homoduplexes
单词：homoduplexes 相关文章
Blizzardcam nearly met its match with the most playful bear it's ever encountered. The bear wanted to know how it worked. Blizzardcam deployed snowballcam as a decoy. This was the polar bears' favorite spy camera and this young male was no exception.
自然百科2010年
At last, there is hope. They have finally reached the pack-ice that forms the polar icecap. Its the ultimate hunting habitat for polar bears. The icecap stretches all the way to the North Pole. Seals are found wherever it meets the sea. Its been a lo
自然百科2010年
A new study has found that the Arctic's iconic polar bears are finding it harder to hunt for food due to melting sea ice caused by climate change, putting the species at a growing risk of extinction. Researchers from the United States Geological Surv
2018CRI中国国际广播电台
Seventy-nine degrees north latitude is near the top, at the cold edge of the world. In the winter, when temperatures plunge below freezing, there is complete darkness at noon. During summer, the sun shines at midnight, there is no place to hide. Dang
国家地理2007年
BBC Learning English Weekender Polar Explorer Amber: Hello, I'm Amber, and youre listening to bbclearningenglish.com. In Weekender today, we listen to an interview with explorer, Rosie Stancer. In March, Rosie sets off on her latest expedition walki
Weekender
BEIJING, June 21 (Xinhua) -- China will launch a new icebreaker for use during an upcoming 2013 polar expedition, a senior oceanic official said on Tuesday. Both the new icebreaker and Xuelong (Snow Dragon), an icebreaker that operated in Antarctica,
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