This was intended to exclude the direct rays of the sun.

这是用来阻挡太阳直射光线的。

《柯林斯英汉双解大词典》

In early summer the trees stood still under the blue sky, held their limbs outstretched and received the direct rays of the sun.

初夏，大树静静地伫立在蔚蓝的天空下，伸出手臂尽情地舒展，捕捉着太阳的丝丝光线。

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But the gradual melt-back of that cover exposes more of the dark ocean, land and vegetation to the direct rays of the Sun, allowing them to absorb ever more solar energy and warm up.

但是这种冰雪盖的逐渐消融使得更多的深色海洋、陆地和植被暴露在太阳的直接辐射之下，从而使它们可以吸收更多的太阳能并变暖。

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