美国俚语学习（a 字母开头）

ace	very good	He's an ace reporter who always gets a good story.
action	excitement	Do you know where the action is in this town?
airhead	a stupid person	My sister's boyfriend is an airhead.
all wet	completely wrong	Your ideas about politics are all wet.
all-nighter	studying all night	I almost fell asleep during the test after an all-nighter.
ammo	ammunition	The gun was useless after the killer ran out of ammo.
antifreeze	alcohol	I really need some antifreeze in me on cold days like this.
armpit	undesirable place	This entire town is really an armpit.
ass	backside	She fell on her ass on the ice skating rink.
ass	obnoxious person	Sometimes you act like such an ass.
awesome	great	What an awesome sunset today.