Translate the following sentences and pay attention to the underlined parts. Television is the transmission and reception of images of moving objects by radio waves. The pupil of the eye responds to the changes of light intensity. The study of the brain is one of the last frontiers of human knowledge and of much more immediate importance than understanding the infinity of space or the mystery of the atoms. That heat flows from a hotter to a cooler body is a process of energy transfer tending to equalize temperature. Firewalls also aren’t suitable for protecting a company from internal attacks, which are becoming more and more common .