这张地图上国界以虚线标出。

Country boundaries are shown on this map as dotted lines.

《牛津词典》

youdao

蓝色虚线代表无水流过的山谷走向。

A broken blue line means the course of a waterless valley.

《柯林斯英汉双解大词典》

You can see that the dash distribution I drew has more out in the tails, so we call it fat-tailed.

你们可以看到,虚线画的这个分布,尾部要长很多,所以我们叫它长尾分布

耶鲁公开课 - 金融市场课程节选

So when you go ahead and draw these on your problem-sets or on your exams, it's a good idea to put these dashed lines in, both for you and for people reading it to see exactly where your molecular orbitals are coming from.

所以当你在做课后题,或者考试的时候要画这些图时，最好把这些虚线放进去，既方便你自己也方便别人知道,这些分子轨道是从哪里来的。

麻省理工公开课 - 化学原理课程节选

I'll pick up wherever the dotted line emerges in the subsequent lecture.

下节课我会把划虚线的部分接着讲完。

耶鲁公开课 - 文学理论导论课程节选