Each year, as the climate warms, the Arctic holds less ice. 每年的天气变暖时 北冰洋的冰就会减少
less than three per cent of Antarctica is free of ice, 南极洲也只有不到3%的地方没有被冰封
Today less than a thousand of these desert specialists remain in the wild. 今天 这些沙漠专家的 野生数量已不足1000只
There may well be less than a hundred Texas cave salamanders in the wild. 世界上可能只有不到100只 野生洞栖童态河溪螈
For others the change is far less welcome. 而有些动物却不是很喜欢这种改变
Less than 2 percent of the sunlight reaches the floor, 只有不到2%的阳光能够到达丛林地表
and their strength is more or less constant all year round. 全年始终或多或少地 受到这种影响力的控制