莫名其妙

The disappearance of the papers has never been accounted for.

那些文件丢得莫名其妙。

She rose to fame out of nowhere.

她莫名其妙名了。

I often suffer from unaccountable headaches.

我常莫名其妙头疼。

I had to have the gnomic response interpreted for me.

我得让人给我解释一下这个莫名其妙的答复。

He was still more perplexed, for this inconsequent smile made nothing clear.

他依然更加到困惑，因为这突如其来的一笑，使他到莫名其妙。

She felt curiously content.

她到莫名其妙满足。

In the middle of a discussion about the weather, Liz started talking about fish. Everyone ignored the non sequitur completely.

大家正在气，莉兹开始起了鱼。大家对这莫名其妙的话都不予理会。