他们研究吸热的原理.They work on a principle of heat absorption.岩壁有时放热, 有时吸热.The rock walls sometimes supply heat, sometimes absorb it.在很高的温度下, 更多的吸热反应起作用.At very high temperatures, more endothermic reactions play a role....
We dodged behind a pillar out of sight of the tourists.我们躲到柱子后面，避开了观光者的视线。He dodged the book that I threw at him.他躲开了我扔向他的书。He dodged amongst the seething crowds of men...他在川流不息的人群中东躲西闪。He dodged cleverly when she threw ...