x No Plagiarism!eyqMsIFE4Lreagnt0hFVposted 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 protection20PENANAvB5bhGrrwi 維尼 172.70.178.3ns 172.70.178.3da2