他承认，内部和外部环境有一个很大的变化。
He confessed, both internal and external environment has been a big change.
他还活着，只是有了很大的变化，就连他自己的名字也记不得了！
He is alive, but he has changed very much. Even his name had been forgotten!
他上次上场有很大的作用，而且你也知道足球场上变化很快。
He made a big impact last time he came on and you know things change quickly.
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