YOU SAID:

once a bird always a bird

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一度鳥はいつも鳥

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Once a bird is always a bird

INTO JAPANESE

鳥が常に鳥になると

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When a bird always becomes a bird

INTO JAPANESE

鳥がいつも鳥になるとき

BACK INTO ENGLISH

When birds always become birds

INTO JAPANESE

鳥が常に鳥になるとき

BACK INTO ENGLISH

When birds always become birds