Polymethylmethacrylate
聚甲基丙烯酸甲酯, 有机玻璃
🗣️ 情景例句
What's on my schedule for today?
我今天有什么日程安排？
What do you know about the tenth century?
有关十世纪的事你知道些什么？
There is no sky in June so blue that it does not point forward to a bluer,
六月蔚蓝的天空总使人遥想一个更加蔚蓝的苍穹；