[求助] 杨鹏难句 25 22

25.  Although these molecules allow radiation at visible wavelengths， where most of the energy of sunlight is concentrated，to pass through，they absorb some of the longer-wavelength，　　infrared emissions radiated from the Earth’s surface，radiation that would　otherwise be transmitted back into space.

Questiom1:  longer-wavelength为何指代infrared

               请问短语　the role of something　如何翻译．

22     Is this a defect ,or authors working out of,or trying to forge,a different kind if aesthet？红字应如何理解呀？

我觉得longer-wavelength 是infrared emissions的修饰吧，radiation that...是同位语, the role of something在哪里出现吗？一般意义上说就是。。。的作用。

22 根据作者的意思来看，他在对一个画家或作家进行评论。

这个（手法）是该被认做他的一项创作的缺陷呢？还是说，他在用另一种美学角度创作，亦或者在推出另一种美学（流派）呢