We were shown some of the ancient manuscripts and rare books that are kept in the British Library.我们看了大英图书馆收藏的一些古代手写本和珍本。The British Library holds its collection in trust for the nation.大不列颠图书馆为国家保存被托管藏书。The British Library holds its collection in trust for the nation.不列颠图书馆受托为国家保管藏书。