ruler ['ru:lə] n. 统治者；支配者；尺；直尺
Define:
A ruler is a straight, flat, and usually thin strip of wood, plastic, or metal with measurements marked on it. It is used to measure or draw straight lines.
定义:
尺子是一种笔直、平坦且通常较薄的木材、塑料或金属条，上面标有刻度。它用于测量或绘制直线。
Example: Use a ruler to draw a straight line on the paper.
例句: 使用尺子在纸上画一条直线。
eraser [ɪ'reɪsə] n. 橡皮擦；黑板擦Define:
An eraser, also known as a rubber (UK), is a small piece of material, often rubber, that is used to remove pencil marks from paper or other surfaces by rubbing.
定义: 橡皮，也被称为橡皮擦（英国），是一种小块材料，通常是橡胶，用于通过擦拭来从纸张或其他表面上去除铅笔痕迹。
Example: I made a mistake, so I need to use the eraser to remove the pencil marks.
例句: 我犯了个错误，所以我需要用橡皮擦去铅笔痕迹。
sharpener [ˈʃɑːpənə] 卷笔刀Define:
A sharpener is a tool used to make the tips of pencils, crayons, or other writing instruments sharp by grinding away the worn or blunt end.
定义: 削笔刀是一种工具，用于通过磨去磨损或钝的末端，使铅笔、蜡笔或其他书写工具的尖端变尖。
Example: The pencil tip is dull. I need to use the sharpener to make it sharp again.
例句: 铅笔尖钝了。我需要用削笔刀把它削尖。
glue [ɡlu:] n. 胶水vt. 用胶水将物体粘合Define:
Glue is a sticky substance, often in liquid or paste form, used to stick things together. It becomes hard or solid when it dries.
定义：
胶水是一种粘性物质，通常以液体或糊状形式存在，用于将物品粘在一起。它在干燥时变得坚硬或固体。
Example: I used glue to attach the pieces of paper together for my art project.
例句: 我用胶水将纸张的碎片粘在一起，用于我的艺术项目。
marker ['mɑ:kər] n. 记号笔,标记笔Define:
A marker is a pen-like instrument with ink that is used for writing or drawing on various surfaces, such as paper, whiteboards, or fabric.
定义:
标记笔是一种类似于钢笔的工具，带有墨水，用于在各种表面上书写或绘图，如纸张、白板或织物。
Example: She used a marker to write important notes on the whiteboard.
例句: 她用记号笔在白板上写下重要的笔记。
