She found it difficult to make friends because of her natural reserve.

她因天性矜持很难交到朋友。

The area has been designated as natural reserve.

该地区已被指定为一个自然保护区。

The area has been designated as natural reserve.

大沼泽地是最大的自然保护区之一。

Animals do not live in the cage in the natural reserve.

在自然保护区动物不在笼中生活。

She smiled and some of her natural reserve melted.

她微微一笑，那天生的矜持也随之消失。