Four major volcanic centers create this part of the island.
幌筵岛的该地区由四个主火山口构成。
There are four primary atmospheric heat source centers and their positions change with season.
全球存在四个主要的大气热源中心，且位置随季节的改变而改变。
There are four primary atmospheric heat source centers and their positions change with season.
全球存在四个主要的大气热源中心，且位置随季节的改变而改变。
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