138 variable length coding ( vlc ) : a reversible procedure for entropy coding that assigns shorter bit strings to symbols expected to be more frequent and longer bit strings to symbols expected to be less frequent 可变长编码vlc ：一种可逆熵编码，为出现频率高的符号分配少的位，为出现频率低的符号更多的位。
2.
He fixed his eyes on the stage , although carrie was not there , a short bit of melodramatic comedy preceding her entrance . he did not see what was going on , however . he was thinking his own thoughts , and they were wretched 但是赫斯渥假装在全神贯注地看戏，目光盯在台上，尽管嘉莉还没出常台上演的是一小段她出场前的通俗喜剧场面，但是他并没有注意台上演的是什么，只顾想自己的心事，都是些令人伤心的思绪。
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