б - MP3
¥(free) ұ?
лӸ ƴ϶ ġ ϳ ¥ ٴ ̴. ̿ ݹ . , , ڿ 츮 ־ ƴѰ? 10 Ȥ 20 ̾ٸ ̷ ݷ ϴٴ . 21 뿡 ŷ Ǵ ȭ Ǿ ȴ. 츮 ¥̸ ϴ. 쵵 ̴. ̷ Ư п (Public goods) Ѵ.
ΰ?
ռ ؾ Ѵ. û ϱ ؼ . ̿ 밡 ġ ʴ Һϴ Ѵ. ڽ ϴ ŭ Һ ִ Ư . Ϲ ȭ 巯 Ư ʴ Һ ϴ ̳ ȭ ռ ʴ Ư ٴ ̴. ̷ ȭ 忡 ð дٸ û ǰ ᱹ û ƴ ̴. ̷ ȭ ο ϴ ̴.
MP3
MP3 ÷̾ Ϲ ߿ ſ ŷ Ǿ ȴ. ǰ ŭ Բ ͳ α ڽ ϴ ִ ֱ ̴. Ӹ ƴ϶ ŷ ٽ ƴұ ȴ. CD Tape ǰ MP3 뿡 ƹ ̰ . ̴. CD 200̶ ʾҴ°? 1̶ 1忡 200 ̶ ǥ ︮ ʴ´. ȭ ٰ ϴ Ǵ. Ϲ ϴµ ʰ װ ϴ ٴ ̴.
MP3 տ ռ ٰ ִ. ʾƵ MP3 ٿε ϰ Ͼ ؿ 翡 ʰ Һ ִ. ҺѴٰ ؼ ٸ Һ ȭ ƴ ̴. ٸ MP3 ϶ 簡 ִ ƴѰ? ˰ ְ ȸ Ҹٴ١ α ۳ ū ̽ ش MP3 ִ ̴.
ο MP3 ?
к ϸ ٰ ο ϴ ƴϴ. ο ϰ 쿡 ̶ Ư ġ ǥϱ ̴. δ پ缺 ϴ Ư . ̰ ΰ ü ذϴ ۿ ̴. տ ó ΰ Ǹ ǰ ִ. Ư ̷ ȭ ؾ ϸ ٸ ְ ϴٰ ִ. Ϲ ȭ Ư ȯ ϴٴ ̴.
MP3 ȭ ȯϱ
ϰ Ư ȭ . ȭ ٰ ٰ ȭ ȭ ҸǴ ƴϴ. ̷ ռ · ȭѴٸ ذ ̴. ǰ ռ · â۵Ǿ. ̷ Ư ߰ȴٸ װ Ǹ ȭ Ǵ ̴. ȭ ҺѴٰ ҺѴٰ ϴٴ Ư . Ư CD Ȥ Tape MP3 ȯ ռ ̸ ݻ ֵ ȯ ̷ ƴϱ ʾƼ ȸ ̴.
Ѱ?
ذǸ ƴٰ Ѵ. ȭ ִ. ̺ ڿ ȸ ذ ִ. MP3 θ ִ°? 켱 ÷̾ δ ϴ. ÷̾ ۻ簡 ۻ縦 ϰ ִ Ȳ ƴ϶ ÷̾ ǸŸ ø ڸ ̴. ٸ α Ұϴ. ᱹ MP3 ذ Ұ ɱ? ܾ ϱ ư ִ ڸ ̸ ο ƴϴ ǿ ִ ̴. MP3 ͼ ȭȴٸ ݻ ̴. ̷ ᱹ Һڿ ذ Ǵ ̴. MP3 ǿ ϴ Һڿ ͼ ̸ ÷̾ ȸ ÷ϰ ̴. ̷ ̷ ð ū ݵȴٴ ̴. ¥ . ¥ .
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