grass mixtures的用法和樣例：
例句
- Up near the ridge I stop at a circle where the deer have matted the soft grass into a cushion.
爬到山脊不遠處，我在野鹿歇身軟草而成的一個圓圓的草墊前停下。 - As the nights lengthened and grew colder, we exchanged our grass mats and solitary beds for a heap of animal skins and stolen blankets.
隨著夜晚漸長漸冷，我們把草墊和單薄的床換成了厚厚的動物毛皮和偷來的毯子。
