Opalescin
乳白蛋白
🗣️ 情景例句
I'm having a wonderful time.
我过得很愉快。
How long will it take to have this radio fixed?
修理这收音机要多久？
Frank could hardly conceal his excitement, for he knew that he had made a real discovery.
弗兰克几乎无法掩饰自己兴奋的心情，因为他明白自己发现了一件珍品。