contextual amplification的用法和樣例：
例句
- This corresponded to a phonon amplification effect.The mechanism of generating the phonon amplification was discussed.
詳細討論了產生這種聲子增益效應的機理，給出了產生聲子增益的時間間隔。 - The maximum gain-before-feedback is the most amplification of the sound before the sound system goes into feedback and starts squealing.
最大反饋前增益，就是音箱開始嘯叫，或者出現振鈴效應時候的增益。
