Weather in our coastal city is nice and cool in sumer.

问题描述:

Weather in our coastal city is nice and cool in sumer.
这句话的主语为什么是Weather in our coastal city

在我们这海岸城市的夏天,天气非常好,又凉爽.
Weather in our coastal city ---我们这个海岸城市的天气,in our coastal city是后置定语修饰weather