The calf must stay close to its protectors... 小象不能掉队
The males stay as close to the female as possible 雄鲸尽可能靠近雌鲸
but he can't stay down here forever. 但它不可能永远躲在下面
These cubs will stay with their mother for nearly two years... 小豹会与母亲待在一起将近两年
For the young Doedicurus, the only option is to stay put. 对巨犰狳幼崽来说 唯一的选择是保持原地不动
And it was flight that would help their descendants stay alive 在小行星撞击地球之后的时代
and allowing it to stay hidden underwater 能够让它在水下隐藏
All the trilobite can do is try to stay out of reach. 三叶虫能做的只有设法保持距离