Upconversion
上变频; 上转换; 升频转换
🗣️ 情景例句
You'll feel better after a good night's sleep.
你好好睡上一觉就会好些。
Unless there is a sudden change of political situation, it is not accepted to execute the contract only partially.
除非有什么突然的政局变化，否则执行部分合同不能被接受。
A fine rain began to fall on our heads and the temperature had dropped.
一阵小雨落到我们头上，气温开始下降了。