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。

And departed I to ponder on time.

而我已离开在时间里沉思。

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。

I'll check on my heart, and ponder on more principles.

我会搞清楚自己的心意，并仔细考虑更多的原则。

After laughing, you may realise there are lots to ponder on.

大笑后，你可能会抵头沉思。