The lithosphere is broken into several tectonic plates that slowly move on the more fluid asthenosphere beneath.
岩石圈分裂成数个构造板块,在下方更具流动性的软流圈上缓慢移动.
Earthquakes and volcanic activity often occur at the boundaries of the lithospheric plates.
地震和火山活动常发生在岩石圈板块的边界处.