practice_skill(skill, topic.materials)
系统化教学：培训课程通常按照既定的教学大纲进行/，内容系统全面，有助于构建完整的知识体系。
时间固定：培训课程通常有固定的上课时间和地点/，需要学员按时参加，可能会与个人时间安排产生冲突。
Student student1 = new Student(Tom, 20);
public static void main(String[] args) {
Learning Methods: Traditional classroom instruction, online courses, or immersive experiences can have different pacing and effectiveness.
It's important to note that language learning is a lifelong process. Even after reaching fluency, one should continue to expand their knowledge and refine their skills through reading, travel, or professional development.
培养自主学习能力：自学过程中需要自己寻找资源、解决问题，这有助于培养独立思考和解决问题的能力/。