Superconverter
超外差变频器
🗣️ 情景例句
By arranging with the public schools
首先， 从公立学校开始
All are not hunters that blow the horn.
吹号角的未必都是猎人。
I had no sooner got back to the kitchen than the doorbell rang loud enough to wake the dead.
我刚回到厨房，门铃又响了起来，响声足以把死人唤醒。