core of pressure gauge

例句：

1. 1. The core of the problem lies in this area.
   问题的核心在于这个区域。
2. 2. The company's core values are honesty and integrity.
   公司的核心竞争力是诚实和正直。
3. 3. The heart of the matter is that we need to work together.
   事情的关键在于我们需要共同努力。