unpremeditated
adj. 无预谋的;偶然的
例句
The nature of offense of major labor security accent is unit crime and unpremeditated crime.
重大劳动安全事故罪在性质上是单位犯罪;
This happy event — supposing it to be such — could only have occurred at an unpremeditated moment.
这件愉快的事情——就算它愉快——只能发生在毫无预谋的时刻。
All growth is a leap in the dark, a spontaneous unpremeditated act without the benefit of experience.
所有的成长是一种在黑暗中的跳越,一种自发性非预谋没有经验的益处的行动。