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1·Give a dog a bad name and hang him.

一旦给人加个坏名声， 他就永远洗刷不掉。

2·Give a dog a bad name and hang him .

给人强加恶名，毁灭人的一生。

3·Give a dog a bad name and hang him is true in George's case. For no one ever has a good word to say for him now.

名声一坏就翻不了身。乔治的情况就是如此，现在谁也不替他说句好话了。

4·Give a dog a bad name and hang him : if people think someone is bad, then nothing can help him. Longman Group Ltd.

中文意思是：如果人们认为某个人很坏，那么是没有什么可以帮他的。