Superconverter
超外差变频器
🗣️ 情景例句
The best way to promote your products is through advertising.
推广产品最好的方法就是买广告。
I didn't see Mr. Jones,but I saw John Smith.
我没看见琼斯先生，但是我看见了约翰·史密斯。
He fell behind with his work.
他工作落后了。