In an unprecedented move, the tribunal ask the witness to sing a song.

史无前例的步骤，法庭要求证人唱一首歌。

The unprecedented move at the second-largest public school system in the United States left over 643,000 students and their parents confused and frustrated.

在美国第二大公立学校体系中，这是史无前例的举动，超过643,000名学生和他们的父母感到困惑和沮丧。

In an unprecedented move, Zedillo chose a member of the opposition party as Attorney General.

塞迪略破天荒挑选了一位反对党人士出任司法部长.