The best kind of kisses are unexpected, unplanned ones. The ones that come naturally, like in the middle of sentence.

最好的一种吻，是出其不意的，没有预谋的，自发自然的，就像话刚说到一半。

youdao

He broke off in the middle of a sentence.

他一句话说了一半就不说了。

《牛津词典》

Sometimes if I'm in the middle of a sentence or the middle of a derivation, I may have to go over by a couple of minutes.

有时候如果我正在讲解一句话，或者正在推导一个公式，我会稍微多讲几分钟。

youdao

I will try to finish every lecture on time, but sometimes if I'm in the middle of a sentence or the middle of a derivation, I may have to go over by a couple of minutes; there's no need to shuffle your feet and move stuff around.

我会尽量准时下课的,但是有时候如果我正在讲解一个概念,或者正在推导一个公式,我会稍微多讲几分钟,你们不用来回蹭脚,收拾东西什么的

耶鲁公开课 - 基础物理课程节选

You want to use "so ~ that" in the middle of the sentence.

so ~ that”句型用在句子的中间。

so that 课堂 - SpeakingMax英语口语达人

One day, in a meeting with the team, she was in the middle of a sentence when the boss rudely cut her off and took over.

FORBES: Daddy Issues In The Office

Later, I was informed, by way of comfort, that Harvey had also missed his death: he was in the middle of a sentence, joking with his nurse.

NEWYORKER: Dead Man Laughing