Still,Burton is cautious about how it will all play out, given the enormity of the task.

VOA: standard.2009.06.15

I think it's a matter of, as a cyclist, being cautious, but also not being afraid.

我想作为一个骑自行车的人，这是自己小心的问题，但是也不必害怕。

我使用自行车 - SpeakingMax英语口语达人

"Cautious optimism is once again the buzz word and I think the region Asia Pacific is showing the way in terms of the IATA statistics,".

VOA: standard.2010.02.04

He gave a cautious endorsement of U.S.-backed U.N.plan to handle Iran's enriched uranium.

VOA: standard.2009.10.30

The visit to Damascus by U.S.envoy Mitchell is another step in what has been a cautious effort by the Obama administration to draw Syria into diplomatic engagement after years of strained relations.

VOA: standard.2009.06.09

That is why I attended today's rally." But many professionals, are cautious about harsher measures or an outbreak of hostilities that would shake investor confidence in South Korea, one of the world's top 15 economies.

VOA: standard.2010.05.27