Rows are only locked at the point in time that a cursor is positioned on them; once the next row is fetched, the lock is released.
数据行只是在游标定位它们时才锁定，一旦获取下一行之后，锁将被解除。
2
So the point of this is: once you get these kind of progressions locked in your ears, you go to a concert and you can begin to chart what the piece is doing in terms of its harmony.
这里的重点是，一旦你的耳朵牢牢记住了这些进程，你去听音乐会的时候就能开始分析一部作品的和声了。
3
While it may seem a minor point, the fact that you can only change properties that are not locked as part of the pattern is worth noting.