单语范例（未经PONS编辑处理）
In 1997, 458 square kilometres of land were being used to produce coca leaves, with only 120 km of that being grown for the licit market.
en.wikipedia.org A drug is ideally to be used for medicinal or licit purposes and not otherwise (or what is known as illicit use).
www.vanguardngr.com However, free trade also increases the sheer volume of legal cross-border trade and provides cover for drug smuggling by providing ample opportunity to conceal illicit cargo in licit trade.
en.wikipedia.org The licit stuff is now as much of a problem as the illicit.
www.theage.com.au They argued that the price difference between licit and illicit poppies would discourage farmers from participating, a problem that could be overcome only by massive subsidies.
en.wikipedia.org