Submitted by Valerie on Tue, 10/17/2017 - 15:21 FountainHow is a fountain work without a motor? 西羅噴泉在古希臘就有不用靠馬達就能產生的噴泉原理：連通管 Tags Science Class Language Plus Living Space語言家 文瑄語文工作室 science experiement
