一个空水池 » An empty water tank 做研究很枯燥的，我们需要很细心，但我们习惯了 » Doing research is boring, we need to very carefully, but we used to ..
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Take an empty two-liter soda bottle, wash it out, fill it with water, screw the lid on tightly and set it into your toilet tank, as far away from the flapper valve as possible.
拿一个两升的空汽水瓶，洗干净，装满水，旋紧盖子，放进马桶的水箱里，离舌形阀越远越好。
Ships float in midair, glasses appear from an empty tank of water, and time stops in a water fountain. How do they do it?
船舶浮在半空中，杯子似乎从一个空箱内浮现，时间又能在喷泉池停止。
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