um

嗯、呃表遲疑

Um, I'm not really sure how to answer that.

呃，我不太確定該怎麼回答。

嗯、這個口語，表懷疑或委婉反對

Um, that's not exactly what I said yesterday.

嗯，我昨天說的其實不是這樣。

支支吾吾、語塞聲常用複數

Her speech was full of ums and long pauses.

她的演講充滿支支吾吾和長長的停頓。