首先从基础知识学起，循序渐进，从易到难。
First tof all from the basic knowledge to learn, step by step, from easy to difficult.
系统的指导：从易到难，逐步介绍声音和拼写的关系。
Bottom-up and systematic instruction: From easy to more difficult, sound-spelling relationships are introduced step by step.
该文探讨了进程同步的教学方法，从易到难，循序渐进，边分析边讲解。
Teaching method of process synchronization is discussed, that is teaching from easy to difficult, step by step, explaining while analyzing.
游戏共有120个关卡，从易到难，从睡着都能轻松过关到让你绞尽脑汁，敢不敢来挑战？
The game has 120levels, from easy to difficult, from the sleep can easily pass to let you rack one's brains, dare to challenge?
游戏共有120个关卡，从易到难，从睡着都能轻松过关到让你绞尽脑汁，敢不敢来挑战？
The game has 120levels, from easy to difficult, from the sleep can easily pass to let you rack one's brains, dare to challenge?
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