Learn about the fundamental principles of electric circuits, including voltage, current, resistance, and common components like wires, batteries, and switches.

Footage of busy city streets on a rainy day, with people rushing to their destinations under colorful umbrellas.

一组描述夕阳下的美景和诗情画意的文字，描绘了夕阳下的自然美景和人文情怀。

Witness the incredible strength of Superman as he effortlessly lifts a massive mountain, showcasing his extraordinary abilities as the Man of Steel.

A tour of the iconic city, showcasing its famous landmarks, diverse neighborhoods, and vibrant culture.

A rare glimpse of the former German Chancellor Angela Merkel savoring a plate of spaghetti in a casual setting.

Watch as Dwayne 'The Rock' Johnson humorously takes a literal rock for a stroll, showcasing his playful personality.