Polyepoxide
聚环氧化物
🗣️ 情景例句
May I make an appointment now?
现在可以预约门诊吗？
Do you know the percentage of the damaged portion?
你们知道残损部分的百分比吗？
Mr. And Mrs. Green have stockings, too.
格林先生和格林夫人也有长统袜。