英语听力：自然百科 大堡礁 自然奇迹(9)（在线收听）

But she's not deterred from approaching.

但她没有打消念头离开。

What she is about to do seems almost suicidal.

她要做的看上去简直是自杀性行为。

She's feeding on tiny blood-sucking parasites, which is why the grouper allows this.

她在寻找吸血寄生虫，石斑鱼允许这样的行为。

Nevertheless, the wrasse has to regularly vibrate her fins against the inside of his mouth just to remind him not to swallow.

然而濑鱼不得不频繁的摆动鱼鳍，拍打石斑鱼的嘴，提醒她不要吞咽。

A single wrasse can eat incredible 1,200 parasites a day, and she's not fussy where she finds them.

仅一条濑鱼一天就能吃下1200条寄生虫，她在哪里都可以找到食物。

Without this decontamination, the grouper would quickly become infested.

如果没有这种净化，石斑鱼全身将遍布寄生虫。

This service is so valuable that the grouper is a regular client, visiting several times a day.

这种服务太重要，石斑鱼是常客。一天光顾好几次。