A team of scientists says acoustic enrichment may be able to help revitalize dead coral like what's found in some parts of the Great Barrier Reef. But what is acoustic enrichment? It's underwater loudspeakers and the music they play includes the sounds of healthy reefs. One of the authors of a study recently published in "Natures Communications", says healthy coral reefs are noisy places. They include the grunts of fish and the snaps of shrimp. But dead coral reefs are apparently much quieter without the hustle and bustle of undersea life.
So what scientists did was put speakers on dead coral patches of the Great Barrier Reef and play the sounds of healthy reefs. And they said that attracted fish about twice as many as areas of dead coral without the sounds. Researchers say the fish could help ecosystems recover and give the coral the chance of new life. The speakers aren't a proven solution at least not at this point. Scientists can't say for sure if the fish that the noises attracted actually stuck around.
That could be key to a reefs recovery. And they're hoping to do more research on this. But they think that the loud speakers could help. There are a number of threats to the health of coral reefs. They range from pollution and low tides to invasive species and changes in water temperature.
因此，科学家将扬声器设在大堡礁的死亡珊瑚群中，播放健康珊瑚群的声音 。他们表示，与一片寂静的死亡珊瑚群相比，播放健康珊瑚群声音可引来鱼群，使鱼类数量增加一倍 。研究人员表示，这些鱼可以帮助生态系统恢复，使珊瑚礁得到新生的机会 。设置扬声器并不是经过验证的解决方案，至少目前还不是 。科学家不能确定被声音吸引过来的鱼类是否就在附近游动 。
这可能是恢复珊瑚礁的关键，他们希望就此展开更多研究 。他们认为扬声器可以提供帮助 。目前有许多因素对珊瑚礁的健康构成威胁 。这包括污染、退潮、入侵物种以及水温变化等 。
1. at least 至少，起码；
Success was assured and, at least to start with, the system operated smoothly.
2. for sure 无疑；肯定；
Even to this day we don't know what happened fo r sure.
3. stick around 呆在原处(等待)；
Stick around a while and see what develops.
4. a number of 若干；许多；
The research begs a number of questions.