threshold of sound

例句：

1. 1. The threshold of the new policy has been reached.
   新政策的门槛已经达到。
2. 2.The company's financial performance is at a critical threshold.
   公司的财务状况正处于一个关键的转折点。
3. 3.At the threshold of the new year, we must make resolutions for our future.
   在新年来临之际，我们必须为我们的未来做出承诺。