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1·The signification of the word house is a building for human habitation.

这个单词的意义是指人们居住用的建筑。

2·Objective: to study effective techniques of controlling high-radioactive of habitation that caused by some building material, so to improve indoor health quality.

目的探讨对由某些建材引起的高放射性居室可采用的有效控制技术措施，以改善居室卫生质量。