你也可以用应用程序锁定车轮，如果被盗它可以跟踪你的自行车。
You can also lock the wheel from the app, which can track your bike if it gets stolen.
毕竟，如果应用程序只是个人的应用程序，而且您不准备依靠它，那么把应用程序锁定在特定的PostgreSQL实例上也挺好的。
After all, it's fine to lock your application into a specific PostgreSQL instance when it's only your personal recipe application, and you're not planning on relying on it.
在游标定位在行中时，锁定这个被应用程序的某个事务访问的任何一行。
Locks any row accessed by a transaction of an application while the cursor is positioned on the row.
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