P-nitroacetophenone
[化] 对硝基苯乙酮
🗣️ 情景例句
The biggest.
最大的。
It is not polite to eavesdrop on the conversation of other people.
偷听他人说话是很不礼貌的。
The Hubble telescope was launched into space by NASA on April 20,1990 at a cost of over a billion dollars.
哈勃望远镜于1990年4月20日由国家航空航天局发射升空，耗资10多亿美元。