average

n.平均；一般水平 a.平均的；一般的

autumn, autumnal, auxiliary, AV, avail, avail oneself of, availability, available, avalanche, avant-garde, avarice, avaricious, avariciously, avdp, Ave, avenge, avenger, avenging, avenue, aver, averagely, averse, aversion, avert, aviary, aviation, aviator, avid, avidity, avidly, avionics, avocado, avoid, avoidable, avoidance, avoided, avoirdupois, avow, avowal, avowedly,