water crosses over the stones
Hello, I am Tom
I set up the water tank on the left, the front of the tank set up a pile of rocks, the water in the tank when the water flows out most of the rocks will be pressed under the water, the water crosses over the stones(Weight=2.6), thus causing the stones will not be washed down the stream.
But I hope I can realize that the water can wash away the stones.
Can you help me, please?
Thank you!
Best regards!
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