Nevertheless, the waterproofing process was essentially sound and was improved and refined over time.

尽管如此，防水处理根本上是完好的，并且随着时间的推移得到改良和完善。

youdao

Nevertheless, the waterproofing process was essentially sound and was improved and refined over time.

尽管如此，防水处理根本上是完好的，并且随着时间的推移得到改良和完善。

youdao