Subharmonic
[电] 次谐波
🗣️ 情景例句
This is very helpful, Mrs. Martinelli.
这样很有用， Martinelli太太。
For some time now, he has contemplated moving to America.
他长久以来就在考虑移居美国了。
People had to use other ways to record information.
人们只得使用其他方法记录资料。