internal number

例句：

1. 1.The company's internal policies are strict.
   公司的内部政策很严格。
2. 2. She was so nervous that she couldn't even breathe properly.
   她太紧张了，以至于呼吸都不正常。
3. 3.The team worked together to solve the problem internally.
   团队共同努力解决了这个问题。