(2)生命的能量基础The Energy Basis of Life 收获阳光：生命的能量源泉 Harvest the sun light -source of energy ◆电能-机械动力：Electrical Energy:support machine ◆ 化学能-生命动力：Chemical Energy:support life（2）生命的能量基础 The Energy Basis of Life 收获阳光：生命的能量源泉 Harvest the sun light –source of energy 电能-机械动力：Electrical Energy : support machine 化学能-生命动力：Chemical Energy: support life