Benz(c)indeno(2,1-a)fluorene
[化] 苯并[c]茚[2,1-a]┑
🗣️ 情景例句
I'll think-it-over.
我会仔细考虑的。
The man is a piano accompanist.
这个人是钢琴伴奏者。
'You needn't have said that,' my wife answered.
“你没必要这么说，”我妻子回答说，