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老狗学不了新把戏;老年人很难适应新事物。
You can't teach old dogs new tricks.
youdao
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谚老狗学不了新把戏;老年人很难适应新事物。
You can't teach an old dog new tricks. (an old dog will learn no new tricks.)
youdao
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谚老狗学不了新把戏;老年人很难适应新事物。
You can't teach an old dog new tricks. (an old dog will learn no new tricks.)
youdao