The word is used for the pressure between two stones that grindwheat into flour.
一词的原文，是指麦子在两块大石中间被磨成面粉的过程中，所承受的极大压力。
3
In the center of the house, the tools which could grindwheat into flour were covered with thick dust and the trace of mice, a rude donkey saddle and some stained sacks lying nearby it.