您要查找的是不是：
- Please sharpen the edge of this axe. 请把这把斧头的刃磨快。
- He had only an imperfect understanding of his task. 他对自己的任务只是一知半解。
- He was dismayed at his lack of understanding. 他对自已的无知感到沮丧。
- He is trying his best to understand his meaning. 他正在尽力弄明白他的意思。
- My pencil is blunt, could you lend me a knife to sharpen it? 我的铅笔钝了，你能借我把刀子削一削吗？
- She found great difficulties in understanding him. 她觉得很难理解他。
- I can not understand the so abstract concept. 我无法理解如此抽象的观念。
- The manuscript requires an expert to understand it. 这份手稿只有专家才看得懂。
- No one could understand the little baby's babble. 没人能听懂这个小婴孩的话。
- I don't understand what his motive is. 我不知道他的动机是什么。
- I can't understand that man's psychology. 我无法理解那个人的心理。
- He can't even sharpen a pencil properly. 他甚至连一支铅笔都削不好。
- I can't understand why your plan fell through. 我不懂你的计划为什么竟会失败。
- I cannot understand his conflicting philosophy. 我不能理解他那互相矛盾的思想体系。
- We need to sharpen up this knife. 我们必须把这小刀削尖。
- I don't fully understand his reasons for leaving. 我不完全理解他离开的理由。
- To bring or be brought to a focus; sharpen. 调节焦距聚或使聚到一个焦点；使尖锐
- I don't understand what you are saying. 我不知道你在说什么。
- To sharpen on a fine-grained whetstone. 珩磨在细磨刀石上磨快
- I don't understand what the word means. 我不懂这个词是什么意思。
