Carrying a bottle of milk, Fern sat down under the apple tree inside the yard.

芬拿了一瓶牛奶，坐到小院子里的苹果树下。

youdao

And builds some mathematics models. Using these models and methods, some nature scenes are simulated successfully, for example: terrain, tree, leaf and fern etc.

利用以上方法，建立一些描述具体自然对象的数学模型，成功地模拟了山峦、树木、树叶和蕨类等自然景物。

youdao

After more than30years protection the islet is the cover taiwan acacia the beefwood the black pine and the mountain cuckoo the myrtle the tree fern the awn winnow basket just like virgin forest.

经过30多年的保护，如今满岛皆是茂密的相思树、木麻黄、黑松和山杜鹃、桃金娘、树蕨、芒箕，犹如原始森林。

youdao