Heat and Cold热与冷A class of Physics at school.在一节物理课上The teacher: "Now, who can tell me anything about heat?"老师：“现在，谁能告诉我关于热（学）的内容？”A small boy held up his hand: "Heat makes things larger, Sir, and cold makes things smaller."一个小男孩子举起他的手说：“老师，热能把东西扩大，然后冷能把东西缩小”"All right! Give an example.”老师：“好的！请举个例子”"In summe...
