Trapped turtles can often free themselves 被困住的海龟在涨潮的帮助下
But no lions fail more often than those that live in the desert. 但沙漠种群的失败次数远比其他种群要多得多
Newly created and often remote, they're hard for colonists to reach. 由于形成时间晚又常十分偏远 鲜有生命踏足
can often lead to intense competition. 时常激起激烈的竞争
The dolphin, as so often, are working as a team, 海豚经常团队合作
Dusky dolphin, often in pods two hundred strong work together to reap the harvest. 200条暗色斑纹海豚聚集在一起 紧密合作,尽情收获
Tail slapping is a method dolphins often use to stun their prey 用有力的尾巴击晕猎物是海豚们常用的方法
Often the only signs of life are what you hear. 只听到各种生物的鸣叫
and will often trek vast distances across these parched plains 为了寻找绿洲