形容詞 duty-free:

1. exempt from duty

1. You're allowed 1 litres of spirits duty-free.
   你可免稅帶進1升烈性酒。
2. There's a good duty-free shop (ie one selling such goods) on the ferry.
   渡船上有個挺不錯的免稅商店。

du.ty-free

adj.（形容詞）
Exempt from customs duties:
免稅：免征各種關(guān)稅的：
例句：
duty-free merchandise.
免稅商品

Of, relating to, or being a region or establishment in which imported goods are exempt from customs duties:
免稅的：可以對進口貨物免征關(guān)稅的地區(qū)或機構(gòu)：
例句：
a duty-free port; a duty-free shop.
免稅港；免稅商店

【引伸】
du.ty-free.
adv.（副詞）