uncertain

不确定的、没把握的、拿不定主意的

She was uncertain whether to accept the job offer.

她不确定要不要接受这份工作。

未定的、不明的、难以预料的

The future of the whole project remains uncertain.

整个专案的未来仍然未定。

不稳定的、多变的

The weather in the mountains is uncertain at this time of year.

这个季节山区的天气很不稳定。

不稳的、犹疑的

He took a few uncertain steps toward the door.

他脚步不稳地朝门口走了几步。

明确地、毫不含糊地

She told him in no uncertain terms to leave her alone.

她明确地告诉他不要再来烦她。