illicit trade的用法和樣例：
例句
- Loyang was a depot in the growing smuggling trade, and its commerce could hide industrial depression.
但在初來(lái)乍到的人看來(lái)，衰退并不顯眼，作為日益蓬勃的走私業(yè)的大貨棧，洛陽(yáng)的商業(yè)繁榮足以掩蓋其工業(yè)的頹敗。 - Officious immigration and customs officers scrutinised documents and searched cabins for stowaways or illicit goods.
一本正經(jīng)的邊境和海關(guān)官員仔細檢查文件，在車(chē)廂里搜索偷渡者和走私貨物。
