速度较慢的

例句：

1. 1. The car is very slow on the highway.
   这辆车在高速公路上开得非常慢。
2. 2. The old man walks slowly to catch his bus.
   老人慢慢地走着去赶公共汽车。
3. 3. The project took a long time to complete because it was slow.
   这个项目花了很长时间才完成，因为它进展得很慢。