driver level

例句：

1. 1. The driver's level of experience is crucial for safe driving.
   驾驶员的经验水平对于安全驾驶至关重要。
2. 2. The company has set a high standard for its drivers to maintain their level of competency.
   该公司设定了高标准，要求其驾驶员保持其驾驶能力。
3. 3. To improve safety, the government is introducing a driver level assessment system.
   为了提高安全性，政府正在引入一个驾驶员水平评估系统。