Picture a ship crossing a long distance. It does not go straight through. Someone has drawn up a list of harbours it will pull into on the way, and at each one it ties up, takes something on, hands something over, and leaves again. None of these is where the journey ends and none is home. They are simply the stops. A port of call is one line on that list: a place the journey pauses at because there is something to do there.
可以想成一艘船要跑一段很長的航程。它不會一路直達。有人先排好了一張表，上面是它沿路要靠的港。每停一個港，就綁纜、上貨、下客，然後再走。這些港都不是終點，也不是它的家。它們就是路上的停點。port of call 就是那張表上的一行：因為在那裡有事要辦，所以旅程在這裡停一下。
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