1.pop off 突然离去；匆匆而去

I must pop off now.
我现在该走了。

He will soon pop off.
他很快就会离去。
2.run out用完；耗尽

But they run out of steam eventually.
但是他们用完了最后的动力。

Petrol is expected to run out too.
预计汽油也将很快用完。

3.marvel at对…惊奇；惊叹

Friends and foes alike marvel at its skill at analysing market trends and responding quickly.
无论是朋友还是敌人都惊叹于其分析市场并快速反应的技术。

One can only marvel at the financial sector's ingenuity in finding new assets to trade.
人们仅在发现可用于交易的新资产时才惊叹于金融产业的独创性。