A／B／C类毒品（英国对毒品的分类，根据毒品的危险程度，以及被发现使用或销售后的受罚程度而定，A类毒品最危险）
in UK law, a group of illegal drugs classified according to how dangerous they are thought to be and how severe the punishment is for using or selling them, with class A the most dangerous
He was charged with possession of a class A drug, namely heroin. 他被控持有一种A类毒品，即海洛因。
Cannabis was reclassified as a class B drug against the advice of government experts.
Experts were willing to consider downgrading ecstasy from a class A to a class B drug.
There is a maximum penalty of two years in prison for using a class C drug.
Cannabis stays in the body for longer than most class A drugs.
See also: class noun (RANK)