圖像加註文字，丹·麥肯齊說，他對「尋找最荒野地方」的熱愛把自己帶到了南極洲。Article InformationAuthor, 瑪麗盧·科斯塔（MaryLou Costa）
Shortcuts: For common scenarios, we pre-calculate the travel time/distance (the "shortcut") between border points within the same cluster and also to border points of immediately adjacent clusters.
，更多细节参见下载安装 谷歌浏览器 开启极速安全的 上网之旅。
Ecologist Phillip Parker sets up his ladder to show us inside.
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