例句與造句

1. Many researches have been conducted in terms of vertical variation of hydrological fluxes from canopy layer aboveground to root layer underground , and what were compared between forest and non - forest land , between different forest types , and even between different parts of the same crown
   國(guó)內(nèi)外對(duì)于森林植被對(duì)水文通量的空間分布的影響，在垂直方向上分層次進(jìn)行水文通量變化過(guò)程的研究；在水平方向上按照林地與非林地的對(duì)比，森林植被類(lèi)型之間的對(duì)比，甚至同一樹(shù)冠的不同部位的對(duì)比等，進(jìn)行了細(xì)致的研究。
2. It's difficult to find root layer in a sentence. 用root layer造句挺難的