简单的活动与练习能让孩子们更深入理解写作在生活中的应用。
Simple exercises can offer insight into writing's real-life applications.
主要介绍了白光led的新应用——卡灯的结构和原理，及其在生活中的应用。
The new application of the white LED, the structure and principles of Card Light as well as its application in life are described.
NK：许多人因为缺乏在生活中应用外语而遗忘了学过的语言，通常能记住的有多少？
NK: So many people forget a language after they've studied it, due to lack of use. How much of a language stays with us after we've forgotten it?
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