who invented the earliest instrument to tell people where earthquakes happened?
问题描述：
who invented the earliest instrument to tell people where earthquakes happened?
看我是个好学的小女生~
答
谁最早发明的工具告诉人们,地震发生?
答案中国人 ---张衡 ---地震仪
中国四大发明之一
·专业翻译·