老龄化进程只是众多例子之一带来的变化和挑战。
The aging process is only one of many examples that bring change and challenge.
国际金融监管的结构和技术面临新的变化和挑战；
The structure and technology of international financial supervision face new change and challenge;
女士们，先生们，绿色大运为宝安带来的变化和挑战。
Ladies and gentlemen, the green universiade has brought changes and challenges to Bao 'an.
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