the straight and narrow path

例句：

1. 1. He chose the straight and narrow path to avoid the crowds.
   他选择了直路以避免人群。
2. 2. The teacher advised us to follow the straight and narrow path in our studies.
   老师建议我们在学习中遵循正直的道路。
3. 3. They decided to take the straight and narrow path to success.
   他们决定走正直的道路去成功。