If you add database connections or use a JDBC driver that allows multithreading, the singleton can be easily adjusted to allow more connections.
当你增加数据库连接或者改而使用支持多线程的JDBC驱动器时，单例模式能够很容易地适应这一变化。
Operated through air pressure and air chamber, this machine can be easily adjusted to achieve more warping of the vamp.
本机采用气压，气囊方式操作，调整鞋面翘度之范围更广、更方便。
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