Sampleite
氯磷钠铜矿
🗣️ 情景例句
When do you think we'll be through?
你认为我们什么时候能完毕？
How many pounds are you going to order?
你要订几磅？
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。