n.致癌物
名词carcinogen的复数形式.
Incomplete combustion is the principal source of man-made carcinogens. 不完全燃烧是人为致癌物的主要来源。
The airborne carcinogens are in the atmosphere as absorbed matter on soot particles. 空气传播的致癌物在大气中是烟炱粒子上吸附的物质。
