To read and not to be used, the book is equal to the waste paper.
读书而不能运用,则所读的书等于废纸。
Such as drive one day less let father, let my mother buy yourself clothes less, let the students use waste paper bag book, use less paper napkins, multi-purpose small handkerchief.
比如让爸爸少开一天车,让妈妈少给自己买衣服,让同学用废旧的报纸包新书,少用餐巾纸,多用小手帕。
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