英语听力：自然百科 大堡礁 自然奇迹(17)（在线收听）

When the sea returns, it brings cool oxygenated water back to the reef.

凉爽而富含氧气的海水随着涨潮重新流入珊瑚礁中。

The relief, though is short-lived.

但只带来了片刻的缓和平静。

Larger sharks gather at the reef's edge, waiting to get at the freshly accessible hunting grounds.

大鲨鱼开始聚集在珊瑚礁的外围，等待着重新进入猎场的时机。

As the water rises, more and more creatures take the opportunity to feed in a new area.

而随着涨潮，越来越多的动物跑来参加聚餐。

For the sharks, fish that can normally outrun them are temporarily caught in the shallows, trapped between sand and surface, with few places to hide.

而对鲨鱼们来说，那些平时它们抓不到的鱼类现在却滞留在浅滩上，被困在浅水里，无处可以躲藏。

Lemon sharks hug the shore, surrounded by schooling bait fish, but for the moment, they seem to have little interest in all this food around them.

柠檬鲨靠着海岸游动，鱼群环绕周围。但这会儿，鲨鱼们看起来对周遭的食物完全不感兴趣。

They are simply waiting for the help.

其实它们只是在等待免费帮手的到来。