Numbers. There should be no digits in the source text because they can cause problems when read aloud. The way a number is read depends on context and might introduce confusion in the dataset. For example, the number “2409” could be accurately read as both “twenty-four zero nine” and “two thousand four hundred nine”.
关于数字的问题：源文本中不应包含数字，因为朗读数字时可能会遇到问题，这是由于数字的读法取决于上下文，可能会在数据集中造成混乱。例如，“2409”可以读作“二四零九”，也可以读作“两千四百零九”。