gyro-magnetic compass

例句：

1. 1.The gyro-magnetic compass was used to navigate ships in the early days of navigation.
   在航海初期，陀螺磁罗盘被用来导航船只。
2. 2. The ancient mariners relied on the gyro-magnetic compass to find their way back to port.
   古代的水手们依靠陀螺磁罗盘找到返回港口的路。
3. 3. In modern times, GPS systems use a gyro-magnetic compass to determine precise locations.
   现代的GPS系统使用陀螺磁罗盘来确定精确的位置。