Upconversion
上变频; 上转换; 升频转换
🗣️ 情景例句
What are your hobbies?
你的爱好是什么？
Lack of knowledge is darker than night.
没有知识比黑夜还要黑。
Yes, it's very nice. What's the time, please?
挺漂亮的，现在几点了？