示例
Default Sample
Let's examine how a bicycle's gear system operates. When you shift gears, the chain moves between different-sized sprockets, creating varying levels of resistance. This mechanical interaction is fascinating because it allows riders to optimize their pedaling efficiency across different terrains.
描述
总点赞数
0
0
总标记数
0
0
总分享数
0
0
总使用数
2
2