preprocessor

例句：

1. 1.The software uses a preprocessor to process the data before it is fed into the main algorithm.
   该软件使用预处理器来处理数据，然后再将其输入到主算法中。
2. 2.The preprocessor is responsible for filtering out noise from the input signal.
   预处理器负责从输入信号中过滤掉噪声。
3. 3.The preprocessor is used to speed up the processing of large amounts of data.
   预处理器用于加速处理大量数据的速度。