Picture an ordinary word with a second meaning packed inside it. On the outside it sounds like nothing special, so it can be said out loud anywhere. What it really carries depends on an agreement, or on what both people already know — and that is what decides who hears the surface and who hears the load.
可以想成一個普通的字，裡面裝著第二個意思。表面上聽起來平平無奇，所以可以在任何地方說出口。它真正帶著什麼，靠的是一個約定，或是雙方本來就心知肚明的事。這一點決定了誰只聽到表面，誰聽得到裡面那層。
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