sharpen
Definition
To make something, especially a tool or blade, sharper or more pointed.
中文 使某物（特别是工具或刀片）变得更锋利或更尖锐。
Example
"He used a whetstone to sharpen his kitchen knife."
To make something, especially a tool or blade, sharper or more pointed.
中文 使某物（特别是工具或刀片）变得更锋利或更尖锐。
"He used a whetstone to sharpen his kitchen knife."