Some electricity is made in power stations, where giant magnets spin inside coils of wire. This spinning motion produces an electric current. Power stations use energy from coal, gas, water, wind, or ...
The Titanic was one of the most famous ships in history. It was designed to be the biggest and most luxurious ocean liner of its time, but its tragic sinking in 1912 made it a story that still ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果