microphone

Please speak into the microphone so everyone can hear. ▶

请对着麦克风讲话，让大家都能听见。

Using a microphone during lectures can help students hear clearly, particularly in large classrooms with poor acoustics.

讲课时使用麦克风可以帮助学生听清内容，尤其是在声学条件较差的大教室里。