Speak louder so that everybody can hear you.
みんなに聞こえるようもっと大きな声で話しなさい
Speak [Talk] of the devil, and he will [is sure to] appear.
うわさをすれば影
speak on television
テレビで演説する
speak one's bosom
胸の内を明かす
speak one's mind
率直に思いを述べる
speak one's thoughts
自分の意見を述べる
speak [talk] out of turn
軽率なことを口にする
speak over the radio
無線機で通話する
speak through one's nose
鼻声で話す
speak to [talk with] ... on [over] the telephone
…と電話で話す
