Is there a traffic light?

那里有红绿灯吗？

While waiting at a traffic light, they saw a black Mercedes coupe on one side and a homeless man begging for food on the other.

在红绿灯旁等候的时候，他们看见一辆黑色奔驰轿车在一边，一个无家可归的人在另一边乞讨食物。

The traffic light is red.

现在是红灯。

The red traffic light made me stop.

红灯让我停了下来。

We need to turn left at the traffic light.

我们需要走到到路灯那里往左拐。