And we wonder how it came to pass that these secrets were lost to the world.

我们想知道这些秘密是如何被世人遗忘的。

People built slighter and slighter every day, until it was feared that the very science of architecture would in no long time be lost to the world.

日复一日，居民窝棚越发粗制潦草，甚至有人开始担忧，这门盖房技艺无需良久就会失传，无人承继。