Only upon the head waters of the Carson have I found this species established on good moraine soil.

只有在卡森河的源头水域， 我才发现这个物种建立在良好的冰碛土壤上。

Thus the moraine soil and the necessary moisture requisite for the better class of meadow plants are at times combined about as perfectly as if smoothly outspread on a level surface.

因此，冰碛土和更好的草甸植物所需的必要水分有时会完美地结合在一起，就好像平滑地铺展在水平表面上一样。