例句與造句

1. :There is some maths or'laws'associated with the branching of rivers, but I do not recall where to find it . talk ) 11 : 02, 3 May 2010 ( UTC)
2. Some fractal patterns exist only in mathematical theory, but others provide useful models for the irregular yet patterned shapes found in nature _ the branchings of rivers and trees, for instance.
3. It's difficult to find branching of river in a sentence. 用branching of river造句挺難的