The trees form a natural protection from the sun's rays.

树木起天然的保护作用，遮挡了阳光的照射。

《牛津词典》

The panda's natural habitat is the bamboo forest.

大熊猫的天然栖息地是竹林。

《牛津词典》

The road follows the natural contours of the coastline.

这条路沿着海岸线的自然轮廓延伸。

《牛津词典》

The ancestral Pueblo people used stone tools to widen the small natural openings in the face of the canyon walls.

VOA: special.2010.07.05

That is to say, it is subservient to the natural world; its importance is that it refers to that world.

也就是说，这些学科都是自然世界的奴仆;,它们存在的价值就是去解释那个自然世界。

耶鲁公开课 - 文学理论导论课程节选

and I really liked, you know, the material and I felt like I had the natural ability for it,

我很喜欢课堂上接触到的那些会计知识，而且我感觉我在这方面有天赋。

为什么是会计学呢？ - SpeakingMax英语口语达人

Basically, the more natural the input, the less toxic the output.

FORBES: Cunning Capitalists Go Blazing Into Biofuels

Free trade is the natural state, the distribution of incomes we get from free trade is the natural state against which others have to be measured.

FORBES: Dani Rodrik on the Distributional Effects of Free Trade

The trust's announcement follows the release of the government's Natural Environment White Paper which outlines the government's vision for the natural environment over the next 50 years.

BBC: Nature plan for ex-steel works in Wigan