There will be a 30-minute map test at the end of the second week of the course. (Those students joining the course late can make up the map test outside of class with no penalty.)

本课程第二周结束时会有一个30分钟地图测验(较晚选课的学生可以在课外进行地图测验，不扣分)。

youdao

What on a map should have been a 45-minute trip ended up taking nearly 10 hours.

WSJ: An Accidental Trip to Trans-Dniester | Traveler's Tale

When he was done, more than a minute later, Jobs had more than 70 countries on the map.

FORBES: Magazine Article

But it is possible to detect minute deviations in this signal, and these fluctuations - seen as mottling in the map - are understood to reflect the differences in the density of matter when the light parted company and set out on its journey all those years ago.

BBC: Planck satellite: Maps detail Universe's ancient light