Upconversion
上变频; 上转换; 升频转换
🗣️ 情景例句
I've been busy all day.
我今天一整天都非常忙。
That woman is very creative; she weaves her own cloth.
那位女士非常有创作欲，她自己织布。
Finding that he could not remember a word of the letter either,
狱卒发现自己连一个字也记不住，