Chromone
色酮, 苯并-γ-吡喃酮
🗣️ 情景例句
She's still giving the toughest English history exams
她仍用最艰深的英国史试题考学生
I need it badly.
我急着要。
how many heath fires they cause, how much litter they leave, in short,
即他们引起了多少场野火，留下了多少垃圾。总之，