Think of two photographs of the same place, taken fifty years apart. In the first there are fields, a track and a few low roofs. In the second there are apartment blocks, a supermarket, traffic lights and a station. The word is about the second photograph, and about the fact that it used to be the first one. Both meanings read the same pair of photographs, only from different sides: one looks at what now stands on the ground, and the other looks at where the people in the picture now live and work.
可以想成同一個地方、相隔五十年的兩張照片。前一張有田、有小路、有幾間矮房子。後一張是大樓、超市、紅綠燈和車站。這個字講的是後面那張照片，而且重點在於它以前是前面那張。兩個意思都在看同一組照片，只是角度不同：一個在看地上蓋了什麼，一個在看照片裡的人現在住在哪裡、在哪裡工作。
登入就可以看每一支怎麼連回核心畫面。