They were left to ponder on the implications of the announcement.

他们被留下来琢磨这项宣告的含义。

《牛津词典》

Even today, the question I often ponder on is this.

即使今天，我仍经常思考的一个问题。

youdao

When I refer to meditation, I mean to ponder on a subject with expectation, or faith.

我提到的沉思是指带着期望、信念去思考某个主题。

youdao

He made his remarks as Pakistani lawmakers ponder a controversial American aid package which President Barack Obama signed on Thursday.

VOA: standard.2009.10.16

While Essex celebrated their title victory, Kent were left to ponder on finishing fourth in the Pro40 table.

BBC: Essex win title as Kent miss out

Another way of putting this is to ponder on how much the ratings agencies lead the markets and how much they just reflect them.

FORBES: Eurozone: France to be Stripped of AAA Rating This Week?

The upstairs windows seemed to ponder blankly on the reflections of clouds.

NEWYORKER: Sons and Lovers