The cell is the unit of which all living organisms are composed.
細胞是構成一切生物的單位。
The trip was magical; the stuff of which dreams are made.
那是一次奇妙的旅行，宛如夢境。
I saw three camp beds, two of which were occupied.
我看見了3張折疊床，其中兩張已有人占了。
Many theories on punishment exist, all of which are variations on a theme.
關于懲罰的理論有很多，雖形式略有不同，但其主旨都是一樣的。
We are dealing with an epidemic the likes of which we have never seen in this century.
我們面臨的疫情規模在本世紀尚屬空前。