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中級獨木舟證書課程 - hkcucanoe.com.hk file密的儀器在空中及地面測量;然後由繪圖員把這些資料繪在地圖裡。在這些地圖 在這些地圖 裡,我們將會找到等高線,等深線,比例尺,方向標,格子網,符號等等。
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