The onion is a hardy plant, and is easily grown.

洋葱对气候的适应性很强, 因此特别容易生长。

And even throughout the winter the leaves of this hardy plant remain green.

就算是到了冬季, 这种顽强植物的叶子依旧绿意盎然。

72. Often very annoying weeds, goldenrods crowd out less hardy plants and act as hosts to many insect pests.

72。黄菊花通常令人生厌，它挤走不那么顽强的植物，并找来很多害虫。

So the researchers planted Arabidopsis, a hardy little plant, in twelve pots of real moon dirt and sixteen pots of the fake, Earth-made moon dirt for comparison.

因此，研究人员在 12 盆真正的月球土壤和 16 盆人造月球土壤中种植了一种耐寒的小植物拟南芥，以进行比较。

And they consist mainly of grasslands and other hardy plants, as well as animals that have been able to adapt to this extreme environment.

它们主要由草原和其他耐寒植物以及已经能够适应这种极端环境的动物组成。