To trap its prey it goes fishing with a line of silk. 它利用一根根的丝来诱捕猎物
Any animal that lives in a cave has to cope with complete blackness, 住在洞穴里的动物都必须 适应彻底黑暗的环境
but in New Zealand some have turned this darkness to their advantage. 但是在新西兰 有些动物却能利用黑暗的条件
However, human beings are seldom the first to reach these black, damp places. 但是 人类绝非 这个阴暗潮湿地界的第一位到访者
deep enough to engulf the Empire State Building. 足以吞没整座帝国大厦
an inner world where only the most adventurous dare to go. 一个只有最勇敢者 才敢涉足的地底世界
their fresh water has brought life and abundance to planet Earth. 淡水为地球带来了无数生机与富饶
400,000 greater snow geese flock to the estuaries along the Atlantic coast of the United States 40万只大西洋雪雁成群飞往 美国大西洋海岸的河口地带