Input (grade 13): Teruyuki Kato, a seismologist at the University of Tokyo, said that the seismic waves of the quake traveled a long distance without losing their power because of the firmness of the terrain in central China.
Output (grade 8): Teruyuki Kato, a seismologist at the University of Tokyo, said that the shock waves traveled a long way. The waves did not lose their power because of the hardness of the ground in central China.