Phenanthrenone
[化] 菲酮
🗣️ 情景例句
Of course not.
当然不是
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。]
Some time ago, however, a peculiar fish was caught near Madagascar.
然而不久前，在马达加斯加附近的海里却捕到了一条奇怪的鱼。