x No Plagiarism!x7t65GRtepGOrU7dLMGWposted on PENANA 地球的重力加速度是9.8,心裡的重力加速度,無盡。8964 copyright protection64PENANA6Ok9KVQ5KP 維尼 15.158.61.36ns 15.158.61.36da2