把query打印出来一看，发现竟然是这个模块本身…… 仔细看了文档才知道，原来__index后面的值是一个function时，lua会调用这个function去获得不存在的键，并且第一个参数是模块本身（即_M，一个table）. 00 About us Contact us GO SHOP Aircraft Helicopters Quadcopters Cars Boats Radio and Accessories Electric Power and Accessories Engines and Accessories Building Materials Aircraft Accessories Field Equipment GoPro Cameras Second Hand First Person View Flight Simulators close ×. Click to learn about these features and decide whether you want them (see Tell me more about a part's warranty, specifications, or manufacturer).
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