最小池大小：连接池中可保持的最小连接数。

Min pool size: the minimum number of connections that can remain in the pool.

youdao

一个可保持的游标(或结果)，就是说该游标在包含它的事务被提交后，也不会自动地关闭。

A holdable cursor, or result, is one that does not automatically close when the transaction that contains the cursor is committed.

youdao

定期维修可保持发动机的顺畅运转。

Regular servicing guarantees the smooth operation of the engine.

《牛津词典》

You also do walking meditation, you can do mantra meditation, you can do all sorts of meditations that can be seen as a step towards maintaining the state of mindfulness at all points of your daily life, which is impossible unless you're a monk for a very long time.

还有行禅，曼怛罗冥想，你可以进行各种冥想修行,都可被视为正迈向,在日常生活的每时每刻,保持警醒，这几乎不可能实现,除非你是修行多年的僧侣。

普林斯顿公开课 - 人性课程节选