山体滑坡的英文是 "landslide"。这个词来源于古英语 "land" 和 "slide" 的组合，"land" 意为 "土地"，"slide" 意为 "滑动"。山体滑坡是指土壤和岩石在自然条件下滑动，造成地面沟壑和断崖的现象。

例句：

The heavy rainfall caused a landslide on the mountain. (暴雨造成了山上的山体滑坡。)

The landslide buried the entire village, killing hundreds of people. (山体滑坡掩埋了整个村庄，导致数百人死亡。)

The authorities have issued a warning about the danger of landslides in the area. (当局已发布警告，警告该地区山体滑坡的危险性。)