極める， 窮める， きわめる
1. to carry to extremes, to go to the end of something, to reach the limits of something
2. to reach the peak of something (e.g. luxury, hardships, etc), to be extremely (e.g. busy)
3. to exhaust completely, to have nothing left (e.g. to say)
做到极致，达到极限；达到某种极致(如奢华、艰辛等)，处于极端状态(如忙碌)；耗尽，一无所有(例如：无话可说)