Besides having a high energy density, the long chains of hydrocarbons are also good building blocks for constructing more complex molecules, such as plastics and pharmaceutical drugs.
除含有高能量外,长链碳氢化合物也适合构建更复杂的分子,如塑料和药品。
2
Since the intensification of urbanization, it not only brought great economic benefits, but also the population explosion, excessive buildingdensity, terrible traffic jam, and other problems.
The two linked towers feature cantilevered balconies with irregular edges that disrupt the densityof the building and provide areas where residents can look up, unimpeded, towards the sky.