函数的作用是：将文件指针的位置倒回到文件的开头。

The rewind function "rewinds" the position of the file pointer to the beginning of the file.

youdao

函数的作用是：将文件指针的位置倒回到文件的开头。

The rewind function "rewinds" the position of the file pointer to the beginning of the file.

youdao