Out of gas: 1). Without gasoline (in a car, truck, etc) 2). Tired; exhausted; worn out 这个短语的字面意思是车没有汽油了，但是它的引申义是形容人累得精疲力尽的状态。 造句： 1). This car will be completely out of gas in a few more miles. 2). I have been playing tennis matches for more than three hours, and I’m really out of gas.