摩天大楼的建筑材料: mortar,stone,brick,iron,steel,concrete,cement 影响摩天大楼建设的因素: elevator,gravity,light,temperature,wind, earthquake, energy, water 章天大楼的种类: skyscraper, supertall,megatall later on 后来 since then 从那时起 stand out 突出;引人注目 have to do with...与......有关 in a way 在某种程度上;在某一点上 back and forth 来回地;反复地 more and more 越来越多 protect against 使免受 in the middle of... 在......中间 because of 因为;由于 what 引导的表语从句，例如: Thats what they called the HomeInsurance Building in Chicago, Illinois, U.S.A. 动词的过去分词短语作时间状语，例如: Completed in 1930,it wonthe title of“World's Tallest Building.” as引导的时间状语从句，例如: As wind moves through theopenings, giant turbines inside the building turn to make energy.