时差N小时 空中城堡真的存在吗?(上)（在线收听）

To Build Castles In The Air

不切实际

Castles are usually enormous structures requiring strong foundations and the use of heavy construction materials such as stone.

城堡通常是一座巨型建筑，需要有坚实的地基，还会使用到沉重的建筑材料，例如石头等。

If the foundations are not strong enough, the castle could collapse.

如果城堡的地基不够牢固，很可能会坍塌。

The idea of building a castle in the air－with no foundation at all－is, of course, ridiculous.

在空中建一座城堡是没有地基的。因此，“空中楼阁”当然是一个很荒谬的主意。

That is why this idiom is used to describe ideas that are not realistic, as if they are dreams or fantasies.

因此，我们可以使用这个成语形容那些不切实际的想法——只不过是梦想或幻想。