Wind is very important but so are two scientific words: gravity(重力) and lift(举力).When something is in the air, gravity is what pulls something back to the ground.you throw a ball in the air, it comes back down because of gravity. When leaves ___ trees onto the ground, that's ...
Wind is very important but so are two scientificwords: gravity (重力) and lift(举力)When something is in the air, gravity is what pulls something back to the groun d. 1 you throw a ballin the air, it c omes back down because of gravity. When leav es 2 trees onto the ground, that...
The wind turbine is not always in the same position, but depending on the flexibility of the moorings and the depth of the sea, it can move between 20 and 50 metres around a central point. Movement in the vertical: Heave. It is important to minimise this movement through the design of ...
About a third of the planet’s food goes to waste, often because of its looks. That’s enough to feed two billion people.
3D print technology is already advanced but we can expect it to be even more advanced in 2050.3D打印技术已经很先进了，但我们可以预计到2050年它会更加先进。Right now, we have 3D printed tools and homes.现在，我们有3D打印工具和房屋。In the future, we will be able to print more tools, and...
f(x)Wind power is a very clean source of energy. This is how wind power works. Wind makes windmills spin(旋转). When the windmills spin, they make electricity. 1 A lot of people think that wind power is new, but that's not true. For thousands of years, people have used wind to ...
Today, big wind turbines make electricity(电) for us.There are three reasons that wind energy is important. First, we will always have wind, so wind energy will not run out. It is a renewable energy. Next, wind does not cause any pollution. It is good for the Earth. Finally, wind ...
for half a decade."Today we're going to learn about sentences," Kerr said. "Does anyone know what a sentence is? Probably not. You know what it means. You just don't know you know what it means. Sentences are important for two reasons. No. 1: That's how people talk. No. 2:...
Wind is very important but so are two scientific words: gravity(重力) and lift(举力). When something is in the air, gravity is what pulls something back to the ground. ___ you throw a ball in the air, it comes back down because of gravity. When leaves ___ trees onto the ground, ...
So our friend Mina Kimes explores how all of that is manifesting at the most important spot on each team. Quarterback. From Caleb Williams' rocky start in Chicago, to Jayden Daniels' star turn on Monday Night Football, Mina looks at several situations around the league to tell us what's ...