英语听力：自然百科 海洋天堂大堡礁:堡礁内外—3

 -It's all exciting to see a large animal in the sea, and of course, the turtles are very iconic species in marine¹ world. And I'm surrounded around this life. Hundreds and hundreds of turtles are in the water column above me, passing over the reef's crest² and now in the blue water.The turtles all converge³ on small islands made of coral rock and sand, known as the coral cases, but not all are suitable for nesting. Some only are sank down, exposed only in low water. And many others have beaches that swamp to high tide. Islands with deep sand and covered in vegatation are more stable, and one island in particular seems just right. In the far north of the Great Barrier Reef is the Rain Island. It's so wide and so special that few people are permitted to land. It's one of the most protected islands on earth. This speck⁴ in the ocean is barely a kilometer long. Yet it attracts thousands of turtles and enormous flocks of sea birds.

 

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1 marine   

adj.海的；海生的；航海的；海事的；n.水兵

参考例句：

• Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
• When the war broke out,he volunteered for the Marine Corps.战争爆发时，他自愿参加了海军陆战队。

2 crest   

n.顶点；饰章；羽冠；vt.达到顶点；vi.形成浪尖

参考例句：

• The rooster bristled his crest.公鸡竖起了鸡冠。
• He reached the crest of the hill before dawn.他于黎明前到达山顶。

3 converge   

vi.会合；聚集，集中；(思想、观点等)趋近

参考例句：

• The results converge towards this truth.其结果趋近于这个真理。
• Parallel lines converge at infinity.平行线永不相交。

4 speck   

n.微粒，小污点，小斑点

参考例句：

• I have not a speck of interest in it.我对它没有任何兴趣。
• The sky is clear and bright without a speck of cloud.天空晴朗，一星星云彩也没有。