1 。The development of machanical timepieces spurred the search of more accurate sundials with which to regulate them
自动计时器技术的发展要求有更高精度的日晷仪来调节计时器。
2。 Anthropology is a science in that anthropologists use a rigorous set of methods and techniques to document obeservations which can be checked by others
人类学是这样一门科学，人类学家们用一套严格的理论方法和技术手段记载所观察到的，使之能被其他人所调阅。
3 Fungi are important in the process of decay, which returns the ingredients to the soil,enhance the soil fertility ,and decomposes animal debirs
菌类植物在生物腐败的过程中很重要，该过程使各元素重新回到土壤中，增强了土壤的肥沃程度，同时并分解动物残骸。
我认为第三句中的which是补充说明the process of decay 的，这点上我和上面某楼的朋友观点不一样
