There is a performance overhead involved with readers/writers because they are intended for character streams, and they encode data to bytes under the covers.
读取器/写入器有性能开销，因为它们旨在用于字符流，且会在后台将数据编码为字节。
Unicode streams, for Unicode character data.
unicode流，用于Unicode字符数据。
ASCII streams, for ASCII character data.
ascii流，用于ASCII字符数据。
The character-oriented streams are less dramatic, providing just two formats.
面向字符的流比较单调，只提供两种格式。
It reduces complicated bit streams into our-character words.
它减少了复杂的位到我们的字符的话流。
Streams are created by entering character from a keyboard.
从键盘流是由某进入角色。
Streams are created by entering character from a keyboard.
从键盘流是由某进入角色。
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