flash使闪现， register记录器，available可获得的
【笑话原文】
A Frustrated Man
A man walked into a Burger King at 12:50 AM, flashed a gun and demanded cash. The clerk turned him down because he said he couldn’t open the cash register without a food order. When the man ordered onion rings, the clerk said they weren’t available for breakfast. The man, frustrated, walked away.
【中文译文】
早餐不供应洋葱圈
凌晨12：50，一名男子走进“汉堡王”。他亮出手枪要钱。收银员说如果不买东西他就打不开收银抽屉。那人说要买洋葱圈。收银员说早餐不供应洋葱圈。那个男子沮丧地走了。
【词汇讲解】
1.falsh使闪现。也有“立即领悟”的意思： The reason for his strange behaviour flashed on me when I meet his mother.我见到他母亲时，对他的古怪行为原因突然明白了。
2.register记录器。还可以指“暖气”： We turned the house registers off during the summer.夏天, 我们关掉室内的暖气。
3.cash现款。You’d better pay in cash.你最好付现金。
4.available可获得的。 When would the search function become available?何时搜索功能才能实现?“有空的”： The doctor is not available now.医生现在没空。
5.frustrated沮丧的。 He was frustrated by deep poverty.他因赤贫而灰心丧气。
