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证书等级介绍
20-Lesson TRA Certificate
• 开放小时:40 课时
• 系统预定:20 课时
• 周期:7 天
40-Lesson TRA Certificate
• 开放小时:80 课时
• 系统预定:40 课时
• 周期:14 天
80-Lesson TRA Certificate
• 开放小时:120 课时
• 系统预定:80 课时
• 周期:28 天