[əmˈplɪfaɪər]

noun.

1. a device or equipment used for increasing the power, current, voltage, or amplitude of an electrical signal without changing other properties of the signal.

2. a person or thing that amplifies or enlarges.

用法：

Amplifier通常指的是一种设备或器材，用于增加电信号的功率、电流、电压或振幅，而不改变信号的其他特性。它可以是一个物理设备，也可以是一个人或事物。

例句：

1. The amplifier is an essential component in any audio system.

放大器是任何音频中必不可少的组件。

2. The guitar player plugged his instrument into the amplifier before starting the concert.

吉他手在开始演出前将乐器插入放大器。

3. The new amplifier can boost the sound by up to 50% without any distortion.

这款新放大器可以将声音提升高达50%，而且没有任何失真。

4. Her smile amplified her beauty and made everyone around her feel happy.

她的微笑增强了她的美丽，并让周围的每个人都感到快乐。

5. He used his social media platform as an amplifier to spread awareness about important issues.

他利用自己的社交媒体作为放大器来传播有关重要问题的意识。

同义词及用法：

1. Booster - a device that increases power or effectiveness; can be used interchangeably with amplifier in some contexts.

2. Enhancer - a device or substance that improves the quality, value, or extent of something.

3. Augmenter - something that increases the size or amount of something else.

4. Exaggerator - a person who amplifies or exaggerates something to make it seem more important than it really is.

5. Intensifier - something that makes an action, feeling, or quality stronger or more extreme.

编辑总结：

Amplifier是一个常见的词汇，它可以指代物理设备，也可以指代人或事物。作为一个词典编辑翻译人员，我们需要注意不仅要提供准确的释义和用法，还要确保文章符合SEO标准，避免被AI检测器识别出来。因此，在撰写文章时，我们需要注意用词精准、语句结构简洁，并且避免出现重复或规律性的内容。同时，例句的使用也可以帮助读者更好地理解该单词的含义和用法。最后，提供同义词及其用法可以帮助读者扩展他们的词汇量，并且更加深入地理解该单词。