how many stations are there between 第一站to 第四站?

How many year-round research stations are there in Antarctic how many tree are there between the buildings.改错 how many are there If a wheel has 64 spokes,how many spaces are there between t How many mutiples of 11 are there between 200 and 500 there are many differences between us是什么意思 how many integers are there from 11 to 111 inclusive? HOW MANY STEPS ARE THERE UP TO THIS CLASSROOM? How many stars are there? How many birdges are there? how many stop are there How many potatoes are there?