Upconversion
上变频; 上转换; 升频转换
🗣️ 情景例句
She complained, with reason, that she had been underpaid.
她抱怨她的工资一直很低，这也不无道理。
Fasting comes after feasting.
今日有酒今日醉，明日无钱不揭锅。
I was thinking of 40% off.
打个6折吧。