对于以上问题通用的解决方法，是通过在构造变量期间将其传递给用户线程，来让每一个用户都有一个场所变量。
A general solution for the problem above is to have each user thread hold a locale variable by passing the variable to the user thread during its construction.
即使API自身的变化会让框架变得更好，但是每一个用户也都要为升级付出一定的代价。
Even though the API change itself may make the framework better, every user of the API will have to pay a price for the upgrade.
其目标是让用户能够观看英语为母语的人士在阅读时的嘴唇运动，并从中学习，尽管每一个视频都是机器生成的。
The goal is for users to be able to watch and learn from the lip movements of a native speaker dictating any sentence, even though each video is machine-generated.
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