"This deer might well be relatively common in Sumatra above a certain altitude," said Timmins, speaking from his base in Madison, Wisconsin. "I always suspected it still survived in the region."

“这种鹿相对来讲，可能在苏门答腊岛上某特定海拔之上比较普遍，”Timmins在他威斯康辛州麦迪逊市的基地说，“我一直怀疑它们仍然在这片区域里生存着。”

youdao

The model in question can reportedly collect ground intelligence from an altitude of 4,000 metres as far as 140km from its base.

据报道这种型号的无人机可以远达140公里在4000米的空中收集地面情报。

youdao

The model in question can reportedly collect ground intelligence from an altitude of 4, 000 metres as far as 140km from its base.

据报道这种型号的无人机可以远达140公里在4000米的空中收集地面情报。

youdao

It traverses oxygen-starved, earthquake-prone terrain that for most of the way is over 4, 000 metres (13, 120 feet) above sea level and rises to 5, 072 metres not far off the altitude of Mount Everest's base camp.

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As someone who has done high-altitude trekking, including to the Everest base camp and Mount McKinley in Alaska, Babar is used to careful bets.

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The climbers at Base Camp are usually well acclimatised and know how to avoid altitude sickness, which is caused by moving to high altitude too quickly.

BBC: NEWS | Health | The highest hospital in the world