我们需要确保树的泥土够坚固 We need to __ ___ ___the earth is ___ ___for a tree

问题描述:

我们需要确保树的泥土够坚固 We need to __ ___ ___the earth is ___ ___for a tree

We need to _make_ _sure__ _that__the earth is solid___ enough___for a treesolid是什么意思