translation.en: However, they will adopt a less natural posture in order to balance it on their laps, which resulted in a significant rise of body heat between their thighs." This is the issue of local warming.
translation.zh: 但是，他们将会采取一种不那么自然的坐姿， 为的是让在他们膝上的笔记本保持平衡， 那会导致两股之间的体温显著身高， 这就导致了所谓的"局部变暖"的问题。