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It is difficult to train pigeons to escape from a certain situation by pecking.
训练鸽子通过叼啄来脱离某种情境是很困难的。
youdao
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It is difficult for them to escape from the prison.
对于他们来说，想从监狱逃走是很困难的。
youdao
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It is difficult for them to escape from the prison.
对于他们来说，想从监狱逃走是很困难的。
youdao