在书中看到这个词条Pyramid picking is evident ,然后查到了这个词条解释:
Pyramid picking here mean lifting several boxes one on the top of other, which is heavy and dangerous. You are supposed to lif them one afer other fro m the top, one by one, to avoid injury. Provided and accepted answer is wrong.
咱们拣货应该都是一箱一箱搬吧?还有一层一层搬的吗?...