1. =air conditioning 空调
2. =average cost 平均支出
3. =alternating current 交流(电)
4. =automatic analog computer 自动模拟电脑
5. 【化】元素锕（ACtinium）的符号
6. =air controlman 美海军航空兵的空中交通管制员
7. =aircraft(s)man 空军士兵
8. =Ante Christum 公元前
9. =ACre 英亩

1. a radioACtive element of the ACtinide series; found in uranium ores

2. an electric current that reverses direction sinusoidally;

   "In the US most household current is AC at 60 cycles per second"
   

In 1984 the long link between AC Cars and the Hurlock family was severed.

1984年AC汽车公司与赫洛克家族间的长期关系中断了。

Cagliari is AC Milan's next opponent, at San Siro on Saturday, where his players can celebrate their latest title victory in front of their home fans.

卡利亚里正是AC米兰下一个对手，下周六在圣西罗，他的球员就能在他们主场球迷前欢庆他们最近的联赛的胜利了。

For two decades, Zhang's AC business boomed.

20年来，张的空调业务蓬勃发展。