threshold fissioning material

例句：

1. 1. The threshold for entry is set at 20 degrees Celsius.
   进入的门槛是20摄氏度。
2. 2.The research team has identified the threshold for a successful outcome.
   研究团队已经确定了成功结果的门槛。
3. 3. The company's financial performance has exceeded the threshold of profitability.
   公司的财务状况已经超过了盈利的门槛。