您要查找的是不是：
- They ground the knife on a grindstone. 他们在磨刀石上磨刀子。
- Our factory produces grindstone. 我们工厂生产磨刀石。
- The children were playing in the sand pit. 孩子们在沙坑中玩耍。
- Many coal-miners were imprisoned in a pit accident. 在一次塌方事故中，许多矿工被压在了井下。
- grindstone pit 磨石井
- The managers want to pit the champion against John. 经理人想让冠军与约翰比赛。
- The managers want to pit the champion against an unknown. 经理们想让冠军与一名未成名的选手比赛。
- A hole or pit, especially one in a road surface. 坑洞尤指路面上的涡穴或坑洞
- The crank used to give motion to a grindstone or similar device. 摇柄，曲柄用于给石磨或其他装置施力的把手
- It's a pity I have to get back to the grindstone. 遗憾的是我不得不回去工作。
- He grinds the ax on the grindstone. 他在磨刀石上磨斧头。
- The teacher believed in hard work and always keep our nose to the grindstone. 老师提倡勤奋，而且也总是要我们埋头读书。
- Don't believe what he says. He's trying to dig a pit for you. 不要相信他的话。他在算计你。
- The boss kept his nose to the grindstone. 老板不停地工作。
- He felt an aching feeling in (the pit of) his stomach. 他胃疼。
- The teacher believed in hard work and always kept our noses to the grindstone. 老师提倡勤奋,而且也总是要我们埋头读书。
- He's got to keep his nose to the grindstone to feed his six children. 他得一刻不停拼命做才能养活他那六个孩子。
- I've got quite used to working in the pit. 在矿井工作我已经很习惯了。
- He ground his knife on a grindstone. 他在磨刀石上蹭刀。
- He sharpened the edgeof his knife on a grindstone. 他在磨石上磨快了他的刀刃。
