translate English to French: The excellent preservation of these often waterlogged deposits and the necessarily large scale of the excavations means that our information of urbanisation and the architecture and layout, as well as the artefactual evidence of these periods, has been substantially increased.
Le parfait état de conservation de ces vestiges, souvent envahis par l'eau, et l'échelle nécessairement vaste des fouilles a singulièrement accru nos connaissances sur l'urbanisation, l'architecture et l'implantation, ainsi que sur les objets de cette période.