They're keenly aware that whatever they decide will set a precedent.

他们深知无论他们决定怎么做，都会开创先例。

Charles listened keenly.

查尔斯竖起耳朵听着。

She remained keenly interested in international affairs.

她一直对国际事务有强烈的兴趣。

The contest should be very keenly fought.

比赛应该会争夺得很激烈。