Logetronography
电子滤波术, 电子选频术
🗣️ 情景例句
Speaking of promoting the book,
说起促销书的事
I'll have studied English for four years next March.
到明年三月，我就学了四年的英语了。[将来完成时，表示将完成…，会做完…]
There was a notice in the supermarket.
超市里有一个布告。