Then they bow like willows, their leaves streaming forward all in one direction, and, when the sun shines upon them at the required angle, entire groves glow as if every leaf were burnished silver.

然后它们像柳树一样弯腰，它们的叶子朝一个方向向前伸展，当阳光以所需的角度照在它们身上时，整片树林都闪闪发光，仿佛每一片叶子都被擦亮了银光。