话筒在英语中被称为"microphone"。这个词的来源可能源于希腊语，"micro"意为"小"，"phone"意为"声音"。

例句：

She spoke into the microphone to address the audience. (她用话筒向观众发表讲话。)

The microphone picked up every word he said. (话筒捕捉到了他说的每一个字。)

He plugged the microphone into the amplifier. (他把话筒插入了放大器。)