level pole

例句：

1. 1. The level of the water istoo high for me to swim.
   水的深度对我来说太高，我无法游泳。
2. 2. The company's performance has been at a consistentlevel since the new management took over.
   自从新管理层上任以来，公司的绩效一直保持在稳定水平。
3. 3. The teacher asked us toraise our hands when we understood the lesson.
   老师要求我们举手表示我们理解了课程内容。