The objective of this course is to introduce the principles and techniques of plant propagation .
本课程主要在介绍各种植物繁殖方法的理论及技术。
But there are some basic techniques and principles that most people follow.
但仍有一些基本方法和原则是大多数人所遵行的。
But there are some basic techniques and principles that people follow.
但仍有大多数人共同遵循的一些基本技巧和原则。
But there are some basic techniques and principles that people follow.
但仍有大多数人共同遵循的一些基本技巧和原则。
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