你连个电话也不打，不够体谅人。

It was inconsiderate of you not to call.

《牛津词典》

连个解释都不给，就更不用说道歉了。

No explanation was offered, still less an apology.

《牛津词典》

我几乎连个盹都没打。

I hardly slept a wink.

《牛津词典》

OK, then it says draw a single bond from each surrounding atom to the central atom, and subtract two valence electrons.

后将中心原子与其相邻原子之间,连上单键，然后减掉2个价电子。

麻省理工公开课 - 固态化学导论课程节选

But you know when he's out of town, he doesn't call at all.

但是你知道，就连平时他出城的时候，都不会打个电话。

I'm worried 课堂 - SpeakingMax英语口语达人

And then linked to the glycerol instead of a third fatty acid chain is a water soluble molecule, like a salt.

但连到甘油上的第三个基团不是脂肪酸链,而是一种水溶性的分子,像盐一样

耶鲁公开课 - 生物医学工程探索课程节选