Nitrofluorene
[化] 硝基芴
🗣️ 情景例句
May I make a suggestion?
我可以提个建议吗？
The postman always comes at 2 o'clock.
邮递员总是在2点钟来。
He has pointed out that the tree is a useful source of income as tour-ists have been coming from all parts of the country to see it.
他指出，由于人们从全国各地纷纷前来参观这棵树，