also a.w.o.l., military initialism (acronym) for absent without leave. The -o- seems to be there mostly so the assemblage can be pronounced as a word. In U.S. military use at least from World War II, popular use by 1960.
实用例句
1. The troops went AWOL to express their complaints about the camp.
部队擅自撤离了，以表示他们对军营的不满。来自柯林斯例句
2. He's gone AWOL from his base.
他从基地开了小差。来自《权威词典》
3. He stained his military record by going AWOL [ a. w . o . l . = absent without official leave ] .
他因擅 离职 守而玷污了军绩.来自《现代汉英综合大词典》
4. His real father had gone AWOL about 17 years earlier, and after that his mother had remarried.
他的生父在17年前不辞而别，自那以后他母亲就改嫁了。来自柯林斯例句
5. At the evening roll call they discovered that he was AWOL.
