1. To obtain a record from an input file . 从某个输入文件中获得一个记录。
2. Reads the next byte of data from this input stream. 从这个输入流中读取下一个字节的数据。
3. The character code, considering the current keyboard states and input locale. 字符代码，考虑到最近的键盘状况和输入场所。
英英解释
n.
1. signal going into an electronic system
2. any stimulating information or event; acts to arouse action
3. a component of production; something that goes into the production of output v.
1. enter (data or a program) into a computer
