不可思议的叠石高手。HOW can the stones in the picture stand on one another without being stuck (粘起来)? Canadian artist Michael Grab is a master of balancing (平衡) stones. His magic power is gravity (重力 ……

不可思议的叠石高手。HOW can the stones in the picture stand on one another without being stuck (粘起来)? Canadian artist Michael Grab is a master of balancing (平衡) stones. His magic power is gravity (重力 ……

Crocodiles swallow stones to help them dive deeper. ……

Humans get a little taller in space because there is no gravity pulling down on them. ……

Astronauts in space cannot belch (打嗝). Without gravity, gas cannot separate from liquids in their stomachs. ……

信不信由你Astronauts can’t cry properly in space because there’s no gravity (重力) to make tears fall. ……

, standing stones. There are 38 of them and most are as tall as 4 meters.Experts(专家) believe it was there around 5,000 years ago.But who built Stonehenge? How did they carry the big and heavy stones by hand ……

passport. The embassy stamps (盖章) your passport or glues (粘贴) a paper into it. The visa says why ……

?A. There are no natural stones in stores and streets.A. There are no natural stones in stores and streets.B. Only colorful stones are natural.B. Only colorful stones are natural.C. Those stones ……

人爱上石头宠物年轻人爱上石头宠物When you think of stones, what comes to mind? Stones in flowerpots (花盆), by riverbanks or on beaches?When you think of stones, what comes to mind? Stones in flowerpots (花盆), by riverbanks ……

are getting popular among young people年轻人爱上石头宠物年轻人爱上石头宠物When you think of stones, what comes to mind? Stones in flowerpots (花盆), by riverbanks or on beaches?When you think of stones, what comes to mind ……

World Cup ball with only water-based inks (墨水) and glues (胶水), it is good for the environment, too... water-based inks (墨水) and glues (胶水), it is good for the environment, too!   ……

, one of the crocodile’s foods is kind of strange.Crocodiles swallow (吞食) large stones! It doesn’t seem healthy. But stones can help them balance (保持平衡) in the water. Scientists say a crocodile ……

a slingshot (弹弓) to shoot birds instead of stones. Falling angry birds must destroy the pigs... in the game follows the rules of gravity (重力) and speed. Many people like the game because they find ……

The Rolling Stones — the world's greatest rock 'n' roll band — are on their way to China to celebrate 40 years of rock. The '40 licks' tour will make history as the Stones perform in Shanghai ……