hard drug
US /ˌhɑːrd ˈdrʌɡ/
UK /ˌhɑːrd ˈdrʌɡ/

1.
ma túy nặng
an illegal drug that is addictive and seriously harmful, such as heroin or cocaine
:
•
The police seized a large quantity of hard drugs during the raid.
Cảnh sát đã thu giữ một lượng lớn ma túy nặng trong cuộc đột kích.
•
He was arrested for dealing hard drugs.
Anh ta bị bắt vì buôn bán ma túy nặng.