Some parts may not see rain for fifty years 有的地方可能连续5年不会下一滴雨 and with such a record 既然有了这一纪录 you'd expect the place to be completely barren. 不难想象这个地方定是彻底的荒芜 These are South America's camels, guanacos. 这些是南美洲的骆驼——原驼 They're very ...
and with such a record 既然有了这一纪录 you'd expect the place to be completely barren. 不难想象这个地方定是彻底的荒芜 These are South America's camels, guanacos. 这些是南美洲的骆驼——原驼 They're very good at conserving moisture 它们非常善于保存水分 but they nonetheless n...
you'd expect the place to be completely barren. 不难想象这个地方定是彻底的荒芜 These are South America's camels, guanacos. 这些是南美洲的骆驼——原驼 They're very good at conserving moisture 它们非常善于保存水分 but they nonetheless need a regular supply of water. 但...
These are South America's camels, guanacos. 这些是南美洲的骆驼——原驼 They're very good at conserving moisture 它们非常善于保存水分 but they nonetheless need a regular supply of water. 但它们仍须定期补充水 They get it partly from cactus flowers 其中一部分水取自仙人掌花 but th...
and that problem dominates the lives of all desert dwellers. 这一问题支配着所有沙漠动物的生活 The Atacama in Chile. 智利的阿塔卡马沙漠 This is the driest desert in the world. 这里是世界上最干旱的沙漠 Some parts may not see rain for fifty years 有的地方可能连续5年不会下一滴雨 and with such a ...
The Atacama in Chile. 智利的阿塔卡马沙漠 This is the driest desert in the world. 这里是世界上最干旱的沙漠 Some parts may not see rain for fifty years 有的地方可能连续5年不会下一滴雨 and with such a record 既然有了这一纪录 you'd expect the place to be completely barren. 不难想象这个地方定是...
This is the driest desert in the world. 这里是世界上最干旱的沙漠 Some parts may not see rain for fifty years 有的地方可能连续5年不会下一滴雨 and with such a record 既然有了这一纪录 you'd expect the place to be completely barren. 不难想象这个地方定是彻底的荒芜 These are South America...
even though their shells are actually watertight. 尽管它们的外壳其实并不透水 In fact, most small desert creatures are nocturnal. 事实上 大多数小型沙漠动物 都是夜行动物 so it's only now that you can judge just how much life there can be in the desert. 所以只有此时你才能判断 沙漠中究...
In fact, most small desert creatures are nocturnal. 事实上 大多数小型沙漠动物 都是夜行动物 so it's only now that you can judge just how much life there can be in the desert. 所以只有此时你才能判断 沙漠中究竟有多少生物 But moisture, lost even at night, has to be replaced some...
so it's only now that you can judge just how much life there can be in the desert. 所以只有此时你才能判断 沙漠中究竟有多少生物 But moisture, lost even at night, has to be replaced sometime somehow 可是水分在晚上也会损耗 必须在什么时候想办法补充 and that problem dominates the live...