a thick canopy of branches的用法和样例：
- The morning sun, shining through the layered canopy of branches, showered them with its brightness as ray after ray shone in their faces.
- He shored up the wall with a thick balk of wood.
- A thick curtain of fog hid the mountains from view.
- A thick growth of weeds covered the yard.
- A thick grouping, as of trees or bushes.