第一声

In a sentence

• 彼の第一声は非常に力強かった。

  His first cry was very powerful.

  Here '第一声' refers to someone's initial vocal expression or utterance, often indicating the start of communication.

• スピーチの第一声で彼女は聴衆を魅了した。

  With the first words of her speech, she captivated the audience.

  In this sentence, '第一声' is used to denote the opening words or beginnings of an address or speech.

• 面接では最初の第一声が重要です。

  The first thing you say in an interview is crucial.

  Here '第一声' indicates the introductory words or initial communication in a formal setting like a job interview.