不列颠群岛由两个大岛-大不列颠岛(较大的一个)和爱尔兰岛，及成千上万个小岛组成。
The British Isles are made up of two large islands-Great Britain (the larger one) and Ireland, and hundreds of small ones.
不列颠群岛由两个大岛［大不列颠岛（较大的一个）和爱尔兰岛］及成千上万个小岛组成。
The British Isles are made up of two large islands—Great Britain (the larger one) and Ireland, and hundreds of small ones.
大不列颠群岛是由大不列颠岛与艾尔兰岛这两个大岛屿以及数百个小岛所组成。
The British Isles are made up of two large islands and hundreds of small ones. The two large islands are Great Britain and Irelnad.
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