n.底漆，底层涂料，初级读本，入门书，识字课本，启蒙读本

原形：primer复数：primers

The primer is essential for the smooth operation of the engine.
底漆对于引擎的顺畅运行至关重要。
She applied a coat of primer before painting the wall to ensure even coverage.
她在粉刷墙壁前涂了一层底漆，以确保均匀覆盖。
A primer on investing would be beneficial for beginners.
初级投资指南对初学者很有帮助。
The primer contained instructions on how to mix and apply it properly.
底漆说明书中包含了如何正确混合和涂抹的内容。
Before installing the new software, I needed to run a system primer.
在安装新软件之前，我需要运行系统预处理程序。
The teacher gave a primer on grammar rules before diving into complex sentences.
老师在讲解复杂句子之前，先简单介绍了语法规则。
The primer was designed to prepare the audience for the main presentation.
这个开场白旨在让观众为接下来的主要演讲做好准备。
A primer on cybersecurity is a must in today's digital age.
在当今数字化时代，网络安全基础知识是必备的。
The primer acts as a bonding agent between the paint and the surface.
底漆作为油漆与表面之间的粘合剂。
After sanding the wood, he applied a primer to protect against moisture.
在打磨木材后，他涂了层底漆以防潮。