Dinitrofluorobene
二硝基氟苯
🗣️ 情景例句
I am so excited. Mother!
我好兴奋， 妈妈！
I don't know for sure.
我不能肯定。
he is lending the bank money, repayment of which he may demand at any time,
就等于把钱借给了银行。这笔钱他可以随时提取，