ngăn chặn * ☊ 
to hinder, block, prevent, stop * ☊ hiệu quả ngăn chặn * ☊ blocking effect * ☊ ngăn chặn * ☊ to hinder, block, prevent, stop * ☊ ngăn chặn bọn buôn lậu * ☊ to prevent the smuggler from doing their business * ☊