‘ ’, ‘ͳʺ ’̶ ̴. ̷ ؼ ѹ .
̴ ‘One Way=Ϲ, ƿ ʴ´’ , 1ȸ̶ ̴.
ͳʺ ‘Returnable(return+able)=ư ִ’ , ľ ٽ ִٴ ̴.
Ʈ , ̶ ϸ ߾. ̳ , , ǸŵǾ. ʰ Һڰ ְ Ǹ ǵ ش. ħ ϴ ľ .
ͷ پ ̴. ٽ ȰǴ ƴұ?
̷ , Ȱ ͷ Ƶ̷ Ͽ. ϰ ϸ, ջ Ƿ ľ ٽ ѹ ֱ , Ʈ ͺ δٴ .
ʴ. Һڷκ տ ǵư , ŷο ۾ ŭ ڱ . Ӱ Ḧ ä쵵 ϴ Ͽ . öƽ ΰ ִ ô̹Ƿ ͷ ̴.
1ȸ Ŭ ͷ ΰ . Ŭ ڽƮ , ݴ ͷ ̴.
, Ŭ Ŭ ڽƮ κ ϴ к ڽƮ δ(, ) DZ , ҺڿԴ δ Ǿ . Һڰ ϴ ( ڽƮ+Ŭ ڽƮ- δ)( ڽƮ) ǰ, 뷫 1ȸ . ͷ Ⱑ .
̰, ͳʺ ֺ ַ Ͽ 忡 ִ Ϳ ִ.
Ŭ ͳʺ ϴ .
Ͽ ͳʺ Ǿ ִ. , ϴ , ִ , ϸ ̿ ͳʺ, ȯ濡 ϰ پ ؼ Ƿ . ؼ ڸ, ͳʺ ŭ ︮ .
<۱ڨ 'öƽ̾' - .>
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