ack造句

The ack - ack guns started immediately.
高射炮立即开始发射.

In our dearth of ack - ack guns all sorts of contrivances were used.
在缺少高射炮的时候,我们利用了各种各样的巧妙方法.

ACK ! Bug spray? Why do we need bug spray?
啊? 杀虫剂? 我们要杀虫剂干什么?