palium

例句：

1. 1.The ancient Romans used opium to treat pain and fever.
   古罗马人使用鸦片来治疗疼痛和发热。
2. 2. The poppy plant is a symbol of the Middle Ages.
   罂粟植物是中世纪的象征。
3. 3. The opium trade was a major source of wealth for many European countries in the 18th century.
   鸦片贸易在18世纪为许多欧洲国家带来了大量财富。