默认情况下使用只能前进的游标。

The default is the forward-only cursor.

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而在性能方面，只能前进的游标优于可滚动游标。

In terms of performance, the forward-only cursor is better than the scrollable cursor.

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心灵的成长史一个繁琐乏味的工作，一次只能前进一小步，期待着循序渐进地进步。

Spiritual growth is sometimes tedious work, one small step at a time. Expect gradual improvement.

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