of or relating to the atmospheric phenomenon auroras;
"a prominent green line in the spectrum of the auroras is called the `auroral line'"
characteristic of the dawn;
"a dim auroral glow"
例句
用作形容词(adj.)
In auroral gaps, however, negatively charged particles may be sucked out from the Earth's ionosphere along adjoining magnetic field lines.有时也称为是黑极光的极光间隙，实际上是反极光。
The solar wind streaming from this coronal hole triggered colorful auroral displays on planet Earth begining late last week, enjoyed by spaceweather watchers at high latitudes.太阳风从这个冕洞中流出，从而触发了上周末地球极光的发生，让高纬度的太空观测者们欣赏到了美景。
