n.全神贯注;浓度;专注;
例句:
He paused and narrowed his eyes in concentration.
他停下来,眯起眼睛专注地看着。
I had a little lapse of concentration in the middle of the race.
我在比赛中途一时走神。
Neal kept interrupting, breaking my concentration.
尼尔不停地打断我,使得我无法集中注意力。