speak in的用法和樣例：
例句
- They got one over us in the end by deciding to speak in German.
他們決定說德語，終於略勝我們一籌。 - She feared to speak in his presence.
她怕在他的面前說話。 - He spoke in sepulchral tones.
他用低沉的語調說話。 - I speak in the full conviction that I will win.
我深信我會贏。 - Don't speak in an authoritative tone.
不要用一種命令的口吻說話。
