解析：记号笔之所以是办公的必备工具，有以下几个原因： 一、记号笔的用途广泛 记号笔是一种常用的书写和标记工具，可以在各种材料上书写和画线，如纸张、白板、玻璃、塑料等。在办公环境中，记号笔被广泛应用于做笔记、标注重点、画图、写标签等任务。无论是会议记录、工作笔记，还是展示演示、排版设计，记号笔都能起到重要作用。 二、记号笔使用便捷 记号笔通常轻便易携带，方便在办公室、会议室、教室等各种场合使用。它的笔尖通常较为细长，可以精准地书写或描绘细节，使得书写和标记变得更为容易和高效。

三、记号笔颜色多样

【荧光笔】荧光笔荧光标记笔小学生专用划重点初中生用双头彩色记号笔作业记笔记淡色系绘画涂鸦笔莹光彩色笔售价：2.73元 领券价：2.45元 邮费：0.00

记号笔的颜色种类繁多，可以满足不同场合的书写和标记需求。例如，蓝色和黑色通常用于正式场合的书写和签名，而彩色记号笔则可用于重点标注、划线等任务。多样化的颜色选择可以帮助员工更好地组织信息，提高工作效率。 四、记号笔耐久性强 记号笔的墨水通常较为耐用，能够持续书写和标记较长时间。此外，记号笔的构造简单耐用，使用寿命长，因此是长期使用不会轻易损坏的办公工具之一。 以上是记号笔成为办公必备工具的原因。下面是将以上内容翻译成英文的文章：

【记号笔】大容量记号笔油性墨水防水防油不掉色粗头黑色红色蓝色天鹅快递物流专用大头笔马克笔勾线包装笔100支批发价售价：8.80元 领券价：8.8元 邮费：0.00

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