英语听力：自然百科 大堡礁 堡礁内外(25)

With such threats, it's a wonder the reef has any future at all but it does have a chance,for the reef has a neat way to help itself recover and it's evident for just one week in late spring.

因为这样的威胁，珊瑚礁是否有未来还是个疑问 但是它有一个机会，珊瑚礁有一种方法自我恢复，它显然只有在晚春的一周。

A few days after a full moon,each hard coral species, along the entire reef,spawns at the same time, on the same night.

在满月后几天，沿着整个珊瑚礁的每种石珊瑚，在同一个夜晚同一时间产卵。

Eggs and sperm¹ unite to form free-swimming larvae².

卵子和精子结合形成了自由游动的幼虫。

Smaller than a pinhead, a coral larva is a like a space capsule.

比针头还小的珊瑚幼虫就像太空胶囊。

It floats away on the current and seeks a new place to grow.

它随着水流游走寻找一个能生长的新地方。

Some larvae travel no more than a few metres others drift thousands of kilometres across the ocean,depending on where the current takes them.

有的幼虫游不过几米，其他的能漂流过海几千公里，这都依赖于水流把它们带到哪。

1 sperm   

n.精子，精液

参考例句：

• Only one sperm fertilises an egg.只有一个精子使卵子受精。
• In human reproduction,one female egg is usually fertilized by one sperm.在人体生殖过程中，一个精子使一个卵子受精。

2 larvae   

n.幼虫

参考例句：

• Larvae are parasitic on sheep.幼虫寄生在绵羊的身上。
• The larvae prey upon small aphids.这种幼虫以小蚜虫为食。