مولد صوت AI مجاني 钉子头原声 من Fish Audio

When you drop a pencil on a flat surface, it bounces slightly because of elastic energy, then rolls due to its hexagonal shape. The center of gravity shifts with each rotation, which creates that distinctive wobbling motion before it finally settles.

The human heart is a powerful muscle that pumps blood through our body. It works continuously to deliver oxygen and nutrients to our cells. This vital organ beats about 100,000 times every day to keep us alive.

今天我们来说说英语提分的关键点。把这156个高频词组背熟，12个核心语法结构掌握好，再配合每天15分钟的听力训练。坚持一个月，英语成绩肯定能提升一大截。重点就是要按计划来。