å 容ç®ä»ã ä¸é大è£è°·èªçº¢æµ·è³èµæ¯è¥¿æ²³å£ï¼è¿ç»µä¸åéï¼ä»å¤ªç©ºé½è½çå°ãè¿éæ¯å¤å§¿å¤å½©çå°æ¹ï¼æå·åçç«å±±ãè¦ççæ£®æçé«å±±ãç¾ä¸½ç峡谷ã广袤çèåã巨大çå¹³æ¹åæ²³æµï¼æ¯é³é±¼ã河马ãç®åã大象ãç«çé¸åéæ´²äººçå®¶åãBBCéç¨ææ°ç髿¸ æå½±ææ¯ï¼æ¢è®¨äºå½¢å¼ä¸é大è£è°·çå°è´¨åéï¼å±ç°ä¸çä¸éçå¨ç©åç§æå¤çå°è²ã Visible from space, Africa's Great Rift Valley runs three thousand miles from the Red Sea to the mouth of the Zambezi. It's a diverse terrain of erupting volcanoes, forest-clad mountains, spectacular valleys, rolling grassl...