And when a log gets to the sawmill, they're going to basically separate those two things because there's different uses for sapwood and for heartwood.

当原木运到锯木厂时，本上会将边和心开处理，因为边和心各有不同的用途。

So you want to cut the sapwood from the heartwood because the heartwood is extraordinarily strong and you use it for

因此，你希望将边从心中来，因为心异常坚固，适合用于需要承受重压的柱子、横梁和类似结构。