1、He used to be a straight-A student, but after becoming a pothead, his grades started to decline.
他过去是个成绩优秀的学生，但在成为一个吸毒者之后，他的成绩开始下降。

2、The party got out of control when a group of potheads showed up and started smoking marijuana.
当一群吸毒者出现并开始吸食大麻时，聚会完全失控。