Upconversion
上变频; 上转换; 升频转换
🗣️ 情景例句
You're right.
你说的对。
You'd have a better chance of catching the train if you took a bus to the station instead of walking.
如果你不是步行而是乘公共汽车的话，那你就比较有可能赶上火车。
Let me pick it up for you.
我替你捡起来吧。