Climate change is affecting air travel in a few ways: extreme heat can make it harder for airplanes to take off, flooding from storm surges and sea level rise is a greater risk for airports and the risk of mid-air lightning hitting planes has increased. And what's known as clear-air tu...
A.Fishrobotscanlearnrealfish'sbehaviorbythemselves.鱼机器人可以自己学习真鱼的行为;B.Lifesaverdronescanattackthesharkstosaveswimmers.救生无人机可以攻击鲨鱼来拯救游泳者;C.Robotbirdscanprotecttheairplanesinthemiddleoftheflight.机器鸟可以保护飞行中的飞机;D.Practicenetsallowplayerstoimprovebasketballskills...
Their light hollow bones, streamlined feathers, curved wings and strong chest muscles are just a few of the tools that help give birds speed. Because of the many different variations and gradations of these traits, each of the more than 10,000 species of birds has its own style (or ...
Emma, Nij and the kids arrive in a field with bees buzzing and distant birds on the breeze Nij: Wow! There are rows and rows of green plants and there are white fluffy balls all over them! It's like being in a field of cotton wool! Kid 1: It looks like a farm Kid 2: I can...
Counting animals in the wild is a hard job. If you can't1how hard it can be. try counting all of the birds in a park near you. The difficulty of counting doesn't stop the International Union for Conservation of Nature and Natural Resources, though. This group publishes(公布) a list ...
Counting animals in the wild is a hard job. If you can’t ___ how hard it can be, try counting all of the birds in a park near you. The difficulty of counting doesn’t stop the International Union for Conservation of Nature Resources, though. This group publishes(公布)a list of ...
But there are downsides, too. Wind turbines can't always run at 100 percent power like many other types of power plants, since wind speeds fluctuate. Wind turbines can be noisy if you live close to a wind plant, they can be hazardous to birds andbats, and in hard-packed desert areas ...
Their light hollow bones, streamlined feathers, curved wings and strong chest muscles are just a few of the tools that help give birds speed. Because of the many different variations and gradations of these traits, each of the more than 10,000 species of birds has its own style (or ...
Watching the river, listening to the chirps (鸟鸣) of the birds and the sound of moving leaves in the tress relaxed me after a hard day at school.I noticed that the bamboo trees would bend (弯曲) in the wind. However, after the wind had died down they would stand up again.When I ...
Many things have changed 70 the invention of the airplanes. Airplanes have made travel or transport faster. Airplanes have really changed our lives. 第四部分写作《共两节,满分35分) 第一节短文改错(共10小题;每小题1分,满分10分) 共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增...