The last glacial period is divided into two stadial stages with an interstadial stage.Evolution of lakes of the source area during the Quaternary went through three stages.
河
区的冰期可划分为3期，即末
冰期、倒数第二冰期、倒数第三冰期，末冰期又可分为2个冰阶。
The last glacial period is divided into two stadial stages with an interstadial stage.Evolution of lakes of the source area during the Quaternary went through three stages.
河区的冰期可划分为3期，即末冰期、倒数第二冰期、倒数第三冰期，末冰期又可分为2个冰阶。
声明：以上例
、词性分类均由互联
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