他们因拥有毒品而被监禁。用英语怎么说？

他们因拥有毒品而被监禁。

They were imprisoned for possession of drugs.

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

imprisoned

v. 下狱，监禁( imprison的过去式和过去分词 )；

例句
As for the imprisoned leaders, he asserted that justice would have to take its course.
他坚称必须对监禁的领导人依法审判。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。

possession

n. 有，所有，拥有，领地，财产，所有权，占有物，所有物，持有违禁物；

例句
They were busted for possession of cannabis.
他们因藏有大麻被逮捕。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

drugs

n. 药物( drug的名词复数 )，药剂，麻醉药，毒品；

例句
The testing and approval of new drugs will be speeded up.
新药品的检测和审批速度将会加快。