"But a lot of groups that are responsible for the abductions are also very keen in obtaining ransom.

VOA: standard.2009.09.10

That's a keen observation.

很敏锐的观察力。

哈佛公开课 - 幸福课课程节选

They always find a new angle, a different part to keen on especially this class. I think they are really keen on.

他们总能找全新的角度，和兴趣点,尤其是这个班级，我认为他们很有热情。

麻省理工公开课 - 媒体、教育、市场课程节选

"For the markets right now, it is a shock because everybody is waiting to see what can come next because such a shocking effect, to do it overnight, is not good for a market which is keen on transparency."

VOA: standard.2010.05.19

"We don't understand how come a mediator who was supposed to defend the cause of democracy will help us to embrace something we've been fighting for nine months, thinking that we were willing or keen to accept a token of gratitude from the general,".

VOA: standard.2009.03.12