微电子机械系统（MEMS）是多种学科的交叉融合，应用领域极为广泛。
MEMS is an amalgamation of multifold subjects and it can find broad applications in various fields.
地理学科，融合了自然科学和社会科学等多种知识，是一门综合性很强的学科。
Geography is a comprehensive and extensive subject, which involves both natural science and social science. Geographical environment is a carrier of human survival and created civilization.
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