单词:
单词: 相关文章
(woman) Thank you. It's great to see so many of you interested in this series on Survival in Outer Space. Please excuse the cameras - we're being videotaped for the local TV stations. Tonight I'm going to talk about the most basic aspect of survival
[00:17.46]The Call [00:21.64]电话 [00:40.63]Forgetting the previous episode, [00:42.72]she ran to the phone before it woke the kids [00:45.39]and shattered her peace. [00:48.13]Snatching up the receiver, she blurted, [00:51.32]Hello?. I'm closer repo
13 Skyscrapers and Environment In the late 1960's, many people in North America turned their attention to environmental problems, and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that a cluster of tall buildings in a
This is Scientific American 60-Second Science. I'm Cindey Graber. This will just take a minute. When TV sets die, they usually end up incinerated or in landfills. But now researchers from Englands University of York believe theyve found a valuable us
Many houses in New Zealand are cold. Our traditional wooden house had no insulation. If you live in a house like that, you are paying for heat to escape from the ceiling, walls and under the floor. Insulation is made from material like wool or fibreg