Pentrite
[化] 四硝基赤藓醇
🗣️ 情景例句
Do you have a story?
你有什么新闻故事呢
She asked me which one I'd like, and I said I didn't mind.
她问我要哪一个，我说哪一个都没有关系。[动词时态一致，这是中国人学习英语最头痛的一个问题。]
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。