1、The interstadial periods during the last ice age allowed for the growth of vegetation and the migration of animals.
在最后一个冰河时期的间冰期间,植被得以生长,动物也有迁徙的机会。
2、Scientists use different indicators to determine the length and characteristics of interstadial periods.
科学家使用不同的指标来确定间冰期的持续时间和特征。