当大量的岩石，泥土或者瓦砾沿斜坡下滑时就形成了滑坡。
Landslides occur when masses of rock, earth, or debris move down a slope.
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别把粘土或者非常紧实的泥土留在罐子里。
Never leave clay or very compact soil in the pot.
应用推荐
模块上移
模块下移
不移动