occasionally needed

Time is occasionally needed to think and to reflect.

有时候我们需要时间来考虑和深思。

I have occasionally needed to produce two-column or three-column output from a database.

我偶尔需要从数据库生成两列或三列的输出。

Of course we may occasionally move up to the next level as we're building trust, but until we've built enough needed, we'll always gravitate back to where we feel the safest.

当然，当我们建立了信任时偶尔会上升到下一层次，但是，除非我们已经建立了足够的需求，否则，我们还将会回到最安全的层次。