三年級英語聽力

To take a fix .using the compass hairline,sight on a prominent landmark or feature shown on a ***.read the magnetic dearing from the front of the compass dial.
帶固定。使用指南針的發(fā)際線，在一個突出的標志性或特征顯示在地圖上。讀磁性的從前面的指南針撥號。巧老
For example,assume you are sighting on a lighthouse and the bearing to the lighthouse in 40度.Now place the compass the map so that light house is on wire-line and Ns is parallel to the magnetic north line on the map.Your location is on the dotted line.
例如，假設(shè)你瞄準答哪的燈塔和軸承的燈塔在40度?，F(xiàn)在把指南針的地圖，房子光線在孝舉升繩索和平行于北線的地圖。你的位置是在虛線。