陈庆望着一双双(shuang)正在思索(suo)的(de)目(mu)光,又(you)继续笑道:原因很(hen)简(jian)单,空气受热(re)了它就会向上走,孔(kong)明(ming)灯里的空气受热(re),热空(kong)气就把孔明灯(deng)托(tuo)起来(lai)飞了,跑(pao)马灯也(ye)一样,顶部被(bei)堵(du)住(zhu),热空(kong)气出不去,它就会向旁边流去(qu),使(shi)跑马灯转动(dong)起来,我刚才说的这(zhe)些,听(ting)懂的(de)请举(ju)手!
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