Aromatic nucleus
[化] 芳香环
🧩 词语组成解析
🗣️ 情景例句
It leaves at 5:20.
五点二十分开。
It is easier to pull down than build.
败事容易成事难。
A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system.
望远镜要放置在木星那样遥远的行星上才有可能在外层空间搜寻生命。因为我们越是接近太阳系的边缘，尘埃就越稀薄。