TPO3个句子理解有障碍 求助！！！

fleur2005UID：2385229

1.Timberline trees are normally evergreens, suggesting that these have some advantage over deciduous trees (those that lose their leaves) in the extreme environments of the upper timberline.


2.Wind velocity also increases with altitude and may cause serious stress for trees, as is made evident by the deformed shapes at high altitudes.


3.The world’s architectural structures have also been devised in relation to the objective limitations of materials.


红字部分理解有困难，希望大家有空能帮我看看：）

kila1002UID：2806614

suggesting that 就是表明的意思呀，补充解释前面evergreen比起deciduous trees 有什么优势

as is made evident 也是解释的意思，这句前面说到cause serious stress for trees，为什么可以得出这个结论？因为shape is deformed，所以支持了前面的观点。

最后一句话么，简单说，就是建筑的设计受限于材料