最終更新日：2022/12/07
if it looks like a duck, swims like a duck, and quacks like a duck, then it's probably a duck
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Alternative form of if it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck
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if it looks like a duck, swims like a duck, and quacks like a duck, then it's probably a duck
proverb
