doped

例句：

1. 1. The paint was doped with lead to make it more durable.
   油漆被掺入了铅以使其更耐用。
2. 2. The food was doped with sugar to make it sweeter.
   食物被掺入了糖以使其更甜。
3. 3. The drug was doped with a powerful stimulant to increase its effectiveness.
   这种药物被掺入了强效的兴奋剂以提高其效果。