原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
loudspeakernoun/laʊdˈspiːkə/
- 1
An electromechanical transducer that converts an electrical signal into audible sound.
- Unintelligible announcements on station loudspeakers are both irritating and confusing.
- Beijing itself signified the transformation. When I visited in 1979 it was a grim city where every pedestrian dressed in a drab gray Mao jacket and every street corner had a loudspeaker repeating the sayings of Mao. The city was desolate and joyless.
- 2
Any such transducer that is loud, as opposed to quiet ones such as those found in headphones.
- 3
An encasing containing one or more loudspeaker devices and usually other electrical equipment such as a driver.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。