It’s only been latterly that we’ve discovered that it’s lots of individual reefs, around about 2,900 separate reef systems which make up the Great Barrier Reef.
直到近来我们才发现，它们其实
独立的礁石，大约有2900个独立的礁石系，组
了大堡礁。
It’s only been latterly that we’ve discovered that it’s lots of individual reefs, around about 2,900 separate reef systems which make up the Great Barrier Reef.
直到近来我们才发现，它们其实独立的礁石，大约有2900个独立的礁石系，组了大堡礁。
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