如图为家鸽的�吸系统结构示意图1如图中�所示的结构是 .2当家鸽飞行时每�吸一次气体两次经过图中数字 所示的结构并在其中进行气体 Template




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tomski如图为家鸽的�吸系统结构示意图1如图中�所示的结构是 .2当家鸽飞行时每�吸一次气体两次经过图中数字 所示的结构并在其中进行气体 coloring