magnetic compass
柯林斯词典
1. N a compass containing a magnetic needle pivoted in a horizontal plane, that indicates the direction of magnetic north at points on the earth's surface 磁針羅磐; 在地球表麪指明磁極的北部之方位
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1. N a compass containing a magnetic needle pivoted in a horizontal plane, that indicates the direction of magnetic north at points on the earth's surface 磁針羅磐; 在地球表麪指明磁極的北部之方位