We have forgotten that resources are scarce. 我们忘记了资源是稀缺的
When the soil is less generous and water becomes scarce, 当土壤不再富饶 水源不再充足
Food can be so scarce in the desert that, even at night, 食物在沙漠中非常稀缺 即便是在夜晚
Food and water are becoming increasingly scarce. 食物和水愈发稀缺
These are as inedible as those in the Taiga so animals are still scarce, 针叶依然如北极针叶林那样难吃 所以动物仍然稀少
Creatures are scarce because few can eat conifer needles. 这里缺乏生物的原因是很少有生物以针叶为食
that contains vital minerals scarce in their natural diet. 而这种矿物质很难从自然食物中获取