源泉: fountainhead, well-spring, water source, origin...
地域: area, district, region...
与此同时: at the same time, meanwhile...
原理: principle, theory...
池子: pond, bathhouse pool, dance floor of a ballroom, (old) stalls (front rows in a theater)...
酷似: to strikingly resemble...
有趣: interesting, fascinating, amusing...
