You can think of an ice pack as a quantity of ice held together as one body. The word pack is doing the same work every time: it gathers the ice so it can be treated as a single thing. A small one sits in your hand and cools a sore ankle. A flat sealed one lies in a cool bag and keeps lunch cold. A huge one floats on the sea and stretches past the horizon. Hand-sized or ocean-sized, it is still one mass of cold that holds together.
可以想成 ice pack 就是「被聚在一起的一團冰」。pack 每次都在做同一件事：把冰攏成一個可以當成單一物件來看的東西。小的那一團握在手裡，拿來冰扭到的腳踝。扁扁封好的那一塊躺在保冷袋裡，讓便當一路保持冰涼。最大的那一片浮在海上，一路延伸到看不見的地方。不論是手掌大小還是海洋大小，它都還是一整團連在一起的冷。
登入就可以看每一支怎麼連回核心畫面。