Quadricorrelator
自动调相线路, 平方律相关器
🗣️ 情景例句
Oh yes.
你好。
Experience must be bought.
若要得经验，必须化代价。
It is no use inviting the politician or the professional or business man,
同样也是无益的，对于政界人士、专业技术人员、商人来说，