This Swedish spruce survived as a low shrub for 9,500 years, but as this mountaintop climate has become warmer, a single trunk has risen above the rest.

这棵瑞典云杉作为低矮的灌木存活了 9500 年，但随着这里的山顶气候变得越来越温暖，一个树干比其他树干伸得更高。

For one, the researchers pointed  out that during the dry season, when competition for food should be at  the most intense, giraffes often browse low shrubs rather than tall trees.

首先，研究人员指出，在旱季，当食物竞争最激烈时，长颈鹿经常吃低矮的灌木而不是高大的树木。