they're driven by an instinctive urge to run to the sea.就受着本能的驱使爬向大海
urge to怂恿;激励
The urge to survive drove them on.
求生的欲望驱使他们继续努力。
She felt a deep urge to write about them.
她迫切想写他们的事迹。
predators can't catch them all.捕食者也不能将他们全部抓光
not all并不是所有的
I'm not all that keen on baseball.
我根本就不喜欢棒球。
Not all the shoes would pair up.
这些鞋子不全是能配成对的。