(银色的) walls. The walls can move apart (分开) and back together again. “Mom, what is it?” the girl asks. The mother didn’t see an elevator (电梯) before. So she answers, “I don’t know.”Then, an old man ……

streaks. The old, cracked bricks are covered with lichens and the walls are weather-beaten guards...I’M studying in a city that’s famous for its walls. People who visit my city are amazed ……

, silver(银色的) walls that could move apart and back together again. The girl asked, “Mother, what... life. I don’t know what it is.” At that moment, an old man in a wheelchair (轮椅) went close ……

这只狗狗是个“跑酷健将” 。Dogs run fast on the ground (地面). But can they do that on walls? Storm is a dog from the United States. She is now 18 months old. And she is really good at wall running. Storm can run ……

Nature CommunicationsNature CommunicationsSmart walls make place nicerSmart walls make place... make the air feel heavy. The scientists used old marble (大理石) pieces and 3D printers to make ……

reviving questions about the *concussion and questioning Clinton’s stamina.They are not alone... an interest in the medical status of potential presidents. In 1995, the then-72-year-old Republican ……

Want to make your walls more interesting? This round robot can help you. It can draw on walls. You download drawings from the internet. Then, the robot draws them on walls. It also draws on glass. ……

Nature CommunicationsNature CommunicationsSmart walls help busy roomsSmart walls help busy rooms3D..., where many people can make the air feel heavy and difficult to breathe. The scientists used old ……

, a retired 78-year-old man, his dream takes him on a hilarious (欢闹的) trip that you''ll never forget in Disney Pixar''s animated movie Up (《飞屋环游记》). Carl lives all alone in his old house which developers want ……

for warmth. Wizened old men struggle to propel heavy wooden pushcarts; maimed beggars moan out... to be health care, education, rebuilding a shattered infrastructure, clearing land mines and reviving ……

are active *reviving it in a creative way. Recently some 37 students from Guangdong University of Foreign... *bankrupt. Small studios are trying hard simply to keep afloat. Liu Hongyu, 22-year-old senior ……

a war against another nation in an online world called Zhengtu.Until recently, the 26-year-old Du... responsible for reviving a tattered empire."There are 168 levels of the virtual warriors; the royal ……

also shown on the walls of the corridor. Even if they are old, they still love their school. For me... school’s achievements in art education. The pictures were glued on the walls of the corridors (走廊 ……

and picturesspray-painted(喷涂) onto city walls and buildings. It became cool among teenagers at the end.... With aspark(火花) of inspiration, young artists can spray their imagination on walls. They say graffiti ……

by 900-year-old walls built of red sandstone that once defended the city against danger. However.... Added to UNESCO’s World Heritage List in 1985, the district is enclosed by 900-year-old walls built ……