Gemmology
n. 宝石学
🗣️ 情景例句
Now that the technical problems have been settled,
既然有关技术问题已经解决，
No good building without a good foundation.
基础不好，建筑不牢。
That would be a waste of money. What's your opinion?
那就浪费钱了。你的意见呢？