It was the kind of rumour that it is impossible to refute.这是那种让人根本没法批驳的谣言。It goes without saying that we have the right to refute them publicly.不用说我们有权公开驳斥他们.The meeting was very lively and informal with everyone chippin...
Many ancient Chinese men of letters left behind beautiful verses about the clepsydra.作为计时器,漏刻的使用比日晷史为普遍.Galileo used a mercury clepsydra to time his experimental falling Bodies.直到16世纪时,迦利略还用水银漏壶为其自由落体实验计时.Water clock : o...