A young female teacher explains and demonstrates how to define variables in JavaScript, covering the basics of variable declaration and usage.

A young child rides a bicycle, demonstrating balance and coordination skills.

Learn how to safely and effectively fire a gun without revealing your position or identity.

Russian President Vladimir Putin presses a symbolic red button, likely initiating a strategic operation or ceremony.

Compilation of talented K-Pop idols showcasing their impressive dance skills and choreography.

A frustrated manufacturer expresses their concerns about the impact of downtime on production and the bottom line.

一只红牛在草地上行走的视频记录