It turns out it's a lot easier to drill foundation piles before the building is built than afterward.
事实证明,在建筑物建成之前钻基础桩比在建筑物建成之后要容易得多。
英语百科
Deep foundation
(重定向自Foundation pile)
A deep foundation is a type of foundation which transfers building loads to the earth farther down from the surface than a shallow foundation does, to a subsurface layer or a range of depths.
A pile is a vertical structural element of a deep foundation, driven deep into the ground at the building site.