1.without rhyme or reason
没来由收藏指正
2.without rhyme or reason; abrupt
没头没脑收藏指正
3.without rhyme or reason; unwarranted
无端收藏指正
4.His behaviour is without rhyme or reason.
他的行为莫名其妙。收藏指正
5.She got angry without rhyme or reason.
她莫名其妙地生起气来。收藏指正
6.without rhyme or reason; for no reason at all
无缘无故收藏指正
7.His wife scolded him endlessly, without rhyme or reason.
他的太太莫名其妙地骂他个不停。收藏指正
8.Sometime, men are frail, too, and feel turndown without rhyme or reason.
男人也脆弱，也会莫名其妙地情绪低落。收藏指正
9.His method of classifying books seems to be without rhyme or reason.
他的图书分类法似乎杂乱无章。收藏指正
10.The old man was very peppery and sometimes without rhyme or reason flew into a passion.
这位老头性情暴躁，有时无缘无故地大发雷霆。收藏指正