"水是万物的本原" 水是万物的本原" "water is the original stuff
泰勒斯水是万物本原
泰勒斯 水是万物的本源|平面|海报|艺产ru - 原创作品 - 站酷 (zcool)
water quality 水质 waste water 污水,废水
water in oceans, lakes, and rivers evaporates, or turns into a
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