21 ϰ Ȧ ڷ 40 ̻ , 40 ̻ , ڱðξ 20 ̻ , 54~74 豺 ̴.
40 ̻ 豺 6 ֱ ϸ, 50 ̻ ߺϴ 50 ̻ ฦ ų к˻縦 ϰ ִ.
ܿ ġ ʰ ȯ Ƿ ߱Ժ ϴ ġ ϰ ִ.
ȯ Ƿ ޱڿ ִ 300 3 ϰ, Ҿƾ ȯڴ Ƿ ޱ, , ǰ ҵ ؿ ִ 2,000 . ִ 3,000 ϴ.
ȯ ߱Ժ ȯ Ƿ ϸ, ִ 70 ̳ ߺ 90% ϴ.
ġ Ż ü Ȯ ߱Ժ ڸ Ȯ ϱ ߴ.
ȿ û 츮 ϴ 6 (, , , , ڱðξ, ) ߰ ġϸ 90% ̻ ġ ϴ١ ϰ ޱ ε帮, ȯ ǰģȭ ȯ ϵ ϰڴ١ ߴ.
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