Gabrite
脲甲醛聚合物
🗣️ 情景例句
I'm on the top floor.
我在顶层。
Please make an appointment with my secretary.
请跟我秘书定个见面时间。
When I present my views on the competitive products, I will refer to the patent situation.
专利的情况会在说明竞争产品时一并提出。