limit of electric field strength

例句：

1. 1. The car's speed limit is 50 miles per hour.
   汽车的速度限制是每小时50英里。
2. 2. We need to follow the traffic rules to avoid hitting the speed limit.
   我们需要遵守交通规则以避免超速。
3. 3. The company has set a limit on the number of employees it can hire.
   公司已经设定了可以雇佣的员工数量上限。