We must bring all positive factors into play. 我們必須調動一切積極因素。
On the teaching material, it should be widely covered and systematic with laddering nature, all factors should be applied to enrich choice of accordion songs. 教材方面，教材內容要全面系統並具有階梯性，更要調動一切因素豐富手風琴曲目的選擇。
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