Ilgner
可变电压直流发电装置
🗣️ 情景例句
She majored in math and physics at university.
她在大学里主修数学和物理。
A wise man needs not blush for changing his purpose.
智者不耻于改变初衷。
It's the hottest day I've had so far.
这是迄今为止我经历的最热的一天。