无缘无故;无端;没有理由的;平白;

从这些问题中,科学家们发现学生们总是回答"我总是有点喜怒无常"。
来源:中考真题- 2016 呼和浩特 阅读判断Fred has given me no good reason for wanting to break up our marriage.
弗雷德没能给我一个想要结束我们婚姻的正当理由。
来源:《柯林斯高阶英汉双解学习词典》Yesterday she started shouting at me for no reason!
昨天她无缘无故对我大喊大叫!Now you are talking.正合我意!我同意!
来源:互联网摘选The coach had to go and break down ~~ on such a terrible road for no reason.
马车只能继续前进,坏在了那糟糕的路上.
来源:电影对白For no reason at all he remembered Fraser's flushed face and Thimblerigg's giggle.
他毫无理由地记起了弗雷泽的红涨的面孔和西姆布勒利格的咯咯笑声.
来源:词典精选例句You turned the 4400 into an army, and you launched an attack for no reason!
是你把4400人编成了军队然后你不宣而战!
来源:电影对白Yesterday, he worked himself into a real frenzy and yelled at me for no reason at all.
昨天他发了好大一通脾气,平白无故地骂了我。
来源:词典精选例句It is a scandal that a person can be stopped for no reason by the police.
警察能无缘无故拦人,这真是令人愤慨的行径。
来源:《柯林斯高阶英汉双解学习词典》微语录 · 唯美句子
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