英语 as的含义
在英语中,as出现的频率是很高的,哪位能否提供一下它的用法及含义,最好能全面一点,要求用实例说明
* Whenever an operation occurs involving a source sequence (such as
* appending or inserting from a source sequence) this class synchronizes
* only on the string buffer performing the operation,not on the source.
* As of release JDK 5,this class has been supplemented with an equivalent
* class designed for use by a single thread,{@link StringBuilder}.The
* StringBuilder class should generally be used in preference to
* this one,as it supports all of the same operations but it is faster,as
* it performs no synchronization.谁能把这段完整翻译过来，我就把分给他哈……金山词霸？