I hear and I forget. I see and I remember. I do and I understand. Confucius。 Chinese philosopher & reformer (551 BC - 479 BC) 真是实践出真知！ 记忆有short-term memory 和long-term memory. 我们要让英语从表层进入深层，记忆从短暂到长久。 学科英语---让你学到真正的英语！！！！ ( 2 sentences)
Remove the CD-ROM from the tray. Remember to hold the CD-ROM by the edges and put it back in its case.